Annex 2 - Wireless user to wired network connection high-level design guidance (ITSG-41)

From: Canadian Centre for Cyber Security

 

Alternate format: Annex 2 - Wireless user to wired network connection high-level design guidance (ITSG-41) (PDF, 1.05 MB)

March 2013

Foreword

The ITSG-41 Annex 2 - Wireless User to Wired Network Connection High Level Design Guidance is an UNCLASSIFIED publication, issued under the authority of the Chief, Communications Security Establishment Canada (CSEC).

Suggestions for amendments should be forwarded through departmental communications security channels to your Client Services Representative at CSEC.

Requests for additional copies or changes in distribution should be directed to your Client Services Representative at CSEC.

For further information, please contact CSEC’s ITS Client Services area by e-mail at itsclientservices@cse-cst.gc.ca, or call 613-991-7654.

Effective date

This publication takes effect on 2013-03-14.

Originally signed by
Toni Moffa
Deputy Chief, IT Security

Table of contents

List of figures

List of gables

List of abbreviations

AES
Advanced Encryption Standard
CMS
Change Management Service
COMSEC
Communications Security
DAC
Discretionary Access Control
DHCP
Dynamic Host Configuration Protocol
DNS
Domain Name Service
EAP
Extensible Authentication Protocol
EAPOL
EAP over LANs
GC
Government of Canada
IDS
Intrusion Detection System
IEEE
Institute of Electrical and Electronics Engineers
INE
In-Line Network Encryptor
IP
Internet Protocol
IT
Information Technology
ITSD
Information Technology Security Director
LAN
Local Area Network
Layer 2
OSI Model Layer 2 – Data Link Layer
Layer 3
OSI Model Layer 3 – Network Layer
MCDS
Malicious Code Defence Service
MPLS
Multi-Protocol Label Switching
NAS
Network-Attached Storage
OSI
Open Systems Interconnection Model
PIN
Personal Identification Number
PKI
Public Key Infrastructure
RADIUS
Remote Authentication Dial In User Service
RF
Radio Frequency
SAN
Storage Area Network
SCNet
Secure Channel Network
SPAM
This is not an acronym – slang name for unsolicited email.
TBS
Treasury Board Secretariat
TCP/IP
Transmission Control Protocol/Internet Protocol
WIDS
Wireless Intrusion Detection System
WLAN
Wireless Local Area Network

1 Introduction

1.1 Purpose

The information provided in this document is intended to be used to assist in the specification of the high-level design for the secure deployment of Wireless Local Area Network (WLAN) services based on the Institute of Electrical and Electronics Engineers (IEEE) 802.11i (802.11) [Reference 1] Footnote 1 standard.

This document includes a reference high-level design to meet the needs of the wireless user to wired network connection business use case where employees within the physical boundaries of the department connect their wireless enabled workstations (e.g., laptops or desktops) to the departmental network through WLAN services to allow access to the department’s end user services. Employees can connect to the WLAN services while they are at their desk or can roam (without session interruption) throughout the department where the WLAN services are available.

The security guidance is structured to be used within the framework of Information Technology (IT) security risk management activities defined within the ITSG-33 - IT Security Risk Management: A Lifecycle Approach – Overview (ITSG-33) [Reference 2].

This document is intended for use during the high-level design activities as illustrated in Figure 1 – ITSG-33 Information System Security Implementation Process defined within the Information System Security Implementation Process (ISSIP) (refer to ITSG-33 - Annex 2 - Information System Level Risk Management Activities). The use of this document minimizes the development effort. Departments can follow its guidance to develop their own high-level designs for WLAN service deployments based on the use of reference high-level designs as a starting point. Recommendations on implementation points for technology-related control elements within the reference high-level designs are provided.

The technology-related control elements are identified from security controls selected from the ITSG-33 (Annex 3 - Security Control Catalogue). The security controls are selected to:

  1. Address the WLAN services deployment’s business needs for security; and
  2. Comply with the departmentally mandated security controls applicable to the WLAN services deployment.

Figure 1 - ITSG-33 Information System Security Implementation Process

Figure 1 - ITSG-33 Information System Security Implementation Process

1.2 Target Audience

This document is intended for information system/security practitioners and those who are responsible for IT security risk management activities associated with the design and implementation of WLANs.

1.3 Publication Taxonomy

This document is part of a series of documents that together form the ITSG-41 publication suite. The other documents in the series are listed below:

2 Wireless User to Wired Network Connection High-Level Design Guidance

This section first presents the reference high-level design for a typical departmental network. The reference high-level design is then augmented with WLAN services for the wireless user to wired connection business use case. Recommendations on where technology-related control elements may be implemented within the reference high-level designs are also provided. The process used to identify the technology-related control elements from an approved set of security controls is described in Annex 4.

2.1 Departmental Network Reference High-Level Design

The reference high-level design for the departmental network is based on the concept of zones as described in ITSG-38 Network Security Zoning Design Considerations for Placement of Services within Zones (ITSG-38) [Reference 7].

There are four primary types of zones described within the ITSG-38. They include the public zones, public access zones, operations zones and restricted zones described in the following subsections and illustrated in Figure 2 - Departmental Network Zones (Figure 2). A department may implement multiple zones of the same type to segregate information services that exist in the same type of zone but with differing security requirements. For example, a department may use two separate public access zones; one to offer public web services to external users in the public zone that are not employees of the department; and a second to host remote access services for external users in the public zone who are employees of the department (i.e., remote access users).

Figure 2 - Departmental Network Zones

Figure 2 - Departmental Network Zones

2.1.1 Public Zones

The public zones consist of communication networks that are not owned and operated by the department. These networks include the Secure Channel Network Enterprise (SCNetE) and any other public network such as the Internet. Departments normally interface directly to the SCNet which provides a Multi-Protocol Label Switching (MPLS) backbone to interconnect departments and provides a communication path to the Internet.

2.1.2 Public Access Zones

Attackers attempting to compromise a departmental network host (e.g., server) will have a greater chance of success with direct Transmission Control Protocol/Internet Protocol (TCP/IP) connectivity to the departmental network host than if the TCP/IP communications first traverse an intermediate proxy. Since the public zones are not controlled by the department, it is therefore not desirable to allow direct TCP/IP connectivity from the public zones to departmental network hosts that support its information services. As a result, the public access zones illustrated in Figure 2 primarily host proxy and relay services that serve to mediate access between the externally accessible information services hosted by the departmental network and the public zones. Information services within the public access zones may include email proxy services, web forward proxy services, web reverse proxy services, external directory services, external Domain Name System (DNS) services and remote access services.

2.1.3 Operations Zones

The operations zones illustrated in Figure 2 primarily host the information services that are accessed by the internal users located within the physical security boundaries of the department. They also host the information services that are accessed by external users located outside the physical security boundaries of the department in the public zones. These externally accessible information services are mediated through proxy and relay services within the public access zones. Information services within the operations zones may include web and portal services, desktop services, email services, internal DNS, file share services, print services, etc. User information is processed within the operations zones but not stored. The operations zones are normally used for the processing of data rather than its storage; internal users are placed within their own operations zone. Communications between the operations zone that hosts the internal users and the operations zone that hosts the end user services are controlled through an internal user perimeter.

2.1.4 Restricted Zones

The restricted zones illustrated in Figure 2 include information management services to maintain the data processed by the information services in the operations zones and the restricted zones themselves. This data may be hosted through enterprise storage technologies such as Network-Attached Storage (NAS) or a Storage Area Network (SAN) and accessed from database servers, email servers or file servers. The restricted zones also include network and security services required to maintain the operation and security of the departmental network. The various services hosted within the restricted zones are further described below and illustrated in Figure 3 - Departmental Network Services:

  1. Information Management Service: The Information Management Service is responsible for the storage, safeguarding and archiving of the information created, processed and stored within the departmental network. This information can include user information (e.g., files, emails, etc.) or system information (e.g., configuration files, backup files, system images, audit records, etc.);
  2. Backup and Recovery Service: The Backup and Recovery Service conducts backups of user information (e.g., files, emails, etc.) and system information (e.g., configuration files, backup files, system images, audit records, etc.) within the departmental network. This information is retained and made available for recovery operations (if required);
  3. Networking Service (Dynamic Host Configuration Protocol (DHCP), Domain Name System (DNS), time, routing, switching, monitoring): The Networking Service is comprised of the switches, routers, firewalls and network monitoring server(s) required to establish and maintain the departmental network zoned architecture. The Networking Service also includes DHCP server(s) for assignment of Internet Protocol (IP) parameters to network hosts, DNS server(s) for name-to-IP address resolution and network time server(s) for provisioning of reference time to network hosts for system clock synchronization purposes;
  4. Authentication and Authorization Service: Authorizations are assigned within the Authentication and Authorization Service for internal users, internal administrators and possibly external users and enforced within the access control functionality of departmental network services they access. The Authentication and Authorization Service includes a Remote Authentication Dial In User Service (RADIUS) server to support the protocols required to interface the login and access control functionality of RADIUS-enabled departmental network services, with the Authentication and Authorization Service;
  5. Audit Service: The Audit Service includes a central repository used to receive and store audit records generated by the departmental network’s services. The Audit Service also analyses the audit records contained in its repository and generates reports based on events of interest and notifies individuals, as necessary;
  6. Intrusion Detection Service (IDS) Service: The IDS Service supports near-real-time analysis of the unencrypted content of internal user, internal administrator and external user communications for unauthorized behaviour;
  7. Change Management Service (CMS): The CMS supports the ability to periodically audit component configurations and to compare these audited configurations against approved configurations in order to detect any unauthorized changes. The CMS also supports the ability to provision configurations to departmental network services. The CMS can report any unauthorized changes to the appropriate individual either directly (e.g., email notification) or indirectly by sending reports to the Audit Service;
  8. File Integrity Service (FIS): The FIS supports the functionality to detect unauthorized modifications to files within departmental network services that support the installation of a FIS agent. The FIS can report any unauthorized changes to the appropriate individual either directly (e.g., email notification) or indirectly by sending reports to the Audit Service;
  9. Malicious Code Defence Service (MCDS): The departmental network services are configured with malicious code defence agents that operate under the policies defined within the MCDS to detect and inspect data for malicious code and to take the appropriate action. The MCDS centrally manages malicious code protection mechanisms implemented within the departmental network services. The MCDS includes the ability to automatically update its supporting software components or signature definitions;
  10. Remediation Service: The Remediation Service automates the collection, analysis, and provisioning of software and software updates to the departmental network services that are compatible with the Remediation Service; and
  11. Public Key Infrastructure (PKI) Service: The PKI Service supports the creation, revocation or recovery of cryptographic keys, digital identities and certificates used in information encryption/decryption operations or for cryptographic-based authentication operations.

Figure 3 - Departmental Network Services

Figure 3 - Departmental Network Services

2.1.5 Management Restricted Zones

Internal administrators are placed within their own management restricted zone. Communications between the internal administrators within the management restricted zone and services within other departmental network zones are controlled through an internal administrator perimeter as well as any other perimeters traversed between the internal administrator and the service. For example, an internal administrator who is required to access a service within the public access zone would traverse the internal administrator perimeter, restricted zones and operations zones perimeters. The departmental network services should be implemented using two separate interfaces to separate management communications used for administration or maintenance (e.g., monitoring, logging, backups, software updates, etc.) from the remaining communications used to support the business activities accessed by the users.

2.2 WLAN Services Reference High-Level Design

The reference high-level design for the wireless user to wired network connection business use case differs based on the sensitivity of the information transmitted by the internal wireless users over the WLAN. The differences are a result of the increase in assurance in the cryptography based products used to secure Protected C and Classified information. The ITSG-13 Cryptographic Key Ordering Manual (ITSG-13) [Reference 8] specifies that:

Only Type 1 crypto-equipment and systems that have been endorsed or approved by CSE should be used to protect electronic communications that transmit Classified and Protected C information.

The commercially available 802.11 based products typically do not meet the Type 1 cryptographic standards that require successful completion of a rigorous certification process. To address the ITSG-13 requirement for Protected C or Classified data, the reference high-level design used for Unclassified, Protected A and Protected B information is augmented with additional Type 1 cryptographic components.

2.2.1 Components

The reference high-level design used for Unclassified, Protected A and Protected B wireless services information is illustrated in Figure 4 - Unclassified, Protected A and B Wireless User to Wired Network Connection and includes the addition of the following components to the departmental network:

  1. Wireless Workstations: departmentally configured internal wireless user desktops or laptops configured with an 802.11 network interface and authorized for connectivity within the internal wireless user zone only. Additional technical security controls requirements (not implemented within this document) may be required if the wireless workstations are permitted to connect to other wireless or wired networks;
  2. Access Points: Thick or thin access points deployed to establish an Extended Service Area to accommodate the wireless workstations. Thick access points all connect to a perimeter wired switch and are individually managed from wireless component administrator workstations located within the internal administrator zone. The thin access points all connect to a perimeter wireless switch and are centrally managed through the perimeter wireless switch from wireless component administrator workstations located within the internal administrator zone;
  3. Perimeter Wireless/Wired Switch: If thin access points are deployed then they connect to a perimeter wireless switch. If thick access points are used then they connect to a perimeter wired switch;
  4. Internal Wireless User Perimeter: The function of the perimeter is to control communications leaving and entering the internal wireless user zone;
  5. Sensors: Wireless Intrusion Detection System (WIDS) sensors can be dedicated sensors if WIDS overlay monitoring is used or implemented as part of the access points if WIDS integrated monitoring is used; and
  6. WIDS Service: The WIDS Service together with its sensors (overlay mode WIDS) or access points (integrated mode WIDS) support near-real-time analysis of events within the internal wireless user zone and monitor for unauthorized wireless components and denial of service attacks.

Figure 4 - Unclassified, Protected A and B Wireless User to Wired Network Connection

Figure 4 - Unclassified, Protected A and B Wireless User to Wired Network Connection

The reference high-level design used for Protected C and Classified wireless services information is illustrated in Figure 5 - Protected C and Classified Wireless User to Wired Network Connection and includes the addition of the following components to the departmental network:

  1. Wireless Workstations: departmentally configured internal user desktops or laptops authorized for connectivity within the internal wireless user zone only and configured with an In-Line Network Encryptor (INE) that meets the Type 1 standards (as per the CSEC-Approved High Assurance Products, Systems and Services Catalogue) and an 802.11 network interface. Additional technology-related control elements (not implemented within this document) may be required if the wireless workstations are permitted to connect to other wireless or wired networks;
  2. Black Access Points: Thick or thin access points deployed to establish an Extended Service Area to accommodate the wireless workstation and their Type 1 encrypted communications. If thick access points are used they connect to a perimeter wired switch and are individually managed from wireless component administrator workstations located within the internal administrator zone. If thin access points are used they connect to a perimeter wireless switch and are centrally managed through the perimeter wireless switch from wireless component administrator workstations located within the internal administrator zone;
  3. Black Sensors: WIDS sensors can be dedicated sensors if WIDS overlay monitoring is used or implemented as part of the access points if WIDS integrated monitoring is used;
  4. Perimeter Black Wireless/Wired Switches: If thin access points are deployed then they connect to a perimeter black wireless switch. If thick access points are used then they connect to a perimeter black wired switch;
  5. Perimeter INE: Used to communicate with the wireless workstation INEs to encrypt/decrypt internal wireless user communications across the WLAN;
  6. Internal Wireless User Perimeter: The function of the internal wireless user perimeter is to control communications leaving and entering the internal wireless user zone; and
  7. Black WIDS Service: The WIDS Service together with its sensors (overlay mode WIDS) or access points (integrated mode WIDS) support near-real-time analysis of events within the internal wireless user zone and monitor for unauthorized wireless components and denial of service attacks.

INEs are used to encrypt and decrypt the communications between the wireless workstations and a perimeter INE. The INEs meet the Type 1 cryptographic standards required to secure Protected C and Classified communications across the WLAN. Communications, once encrypted by an INE, are Unclassified.

Figure 5 - Protected C and Classified Wireless User to Wired Network Connection

Figure 5 - Protected C and Classified Wireless User to Wired Network Connection

Since the communications between the internal wireless user workstations and the perimeter INE are Unclassified, all components that support those Unclassified communications are considered Unclassified as well (e.g., access points, sensors, and perimeter black wireless/wired switch). All communications traversing the perimeter INE towards the perimeter black wireless/wired switch are encrypted. This means that the perimeter black wireless/wired switch, access points or sensors are unable to communicate with the departmental network core services located behind the restricted zone perimeter, nor can they be accessed (for administrative purposes) by the wireless component administrators located behind the internal administrator perimeter.

These components are instead administered from a separate black network that cannot communicate with the Protected C or Classified departmental network. The black network can be implemented solely for the purpose of administering and maintaining the operation of the access points, sensors, perimeter black wireless/wired switch, or it can be a pre-existing Unclassified, Protected A or Protected B network within the department. The black network hosts the WIDS service and any core services (e.g., Authorization and Authentication Service, Audit Service, etc.) required to support the secure operation of the access points, sensors, and perimeter black wireless/wired switch. The perimeter INE may be remotely managed by an INE administrator using a management INE to communicate securely with the perimeter INE.

2.2.2 Communications

The different categories of communications for the Unclassified, Protected A and Protected B wireless user to wired network connection business use case are illustrated in Figure 6 - Unclassified, Protected A and B Wireless User to Wired Network Connection Communication Types (Figure 6) and include:

  1. Component communications (labelled “1” in Figure 6) between the wireless components and departmental network core services discussed in Section 2.2.1 Components;
  2. Wireless component administrator communications (labelled “2” in Figure 6) used to administer the wireless components and that exist between the wireless component administrator workstations and the wireless components; and
  3. Internal wireless user communications (labelled “3” in Figure 6) between the wireless workstation and the departmental network’s operations zone.

Figure 6 - Unclassified, Protected A and B Wireless User to Wired Network Connection Communication Types

Figure 6 - Unclassified, Protected A and B Wireless User to Wired Network Connection Communication Types

The different categories of wireless services communications for the Protected C and Classified wireless user to wired network connection business use case are illustrated in Figure 7 - Protected C and Classified Wireless User to Wired Network Connection Communication Types (Figure 7) and include:

  1. Component communications (labelled “1a” and “1b” in Figure 7) between the wireless components and the departmental network core services;
  2. Wireless component administrator communications (labelled “2a” and “2b” in Figure 7) used to administer the wireless components and that exist between the wireless component administrator workstations and the wireless components;
  3. INE administrator communications (labelled “2c” in Figure 7) used to administer the INEs; and
  4. Internal wireless user communications (labelled “3” in Figure 7) between the wireless workstation and the departmental network’s operations zone.

2.2.3 Concept of Operation

Wireless workstations are placed within their own sub-zone within the department’s operations zone. This sub-zone is referred to as the “internal wireless user zone” and is comprised of its own routable network. A sub-zone is used so that the communications between the “internal wireless user zone” and the departmental operations zone can be controlled. This control is performed at the internal wireless user perimeter.

Only authorized wireless workstations are allowed to connect to the internal wireless user zone. All wireless workstations should first successfully complete 802.11 association and authenticate using 802.1X port-based authentication. In the 802.1X port-based authentication process the wireless workstations are the supplicant, if thick access points are used then the access point is the authenticator, otherwise if thin access points are used the wireless switch is the authenticator. Wireless workstations send and receive their Extensible Authentication Protocol (EAP) messages to/from the thick access point or thin access point’s wireless switch using the EAP over LANs (EAPOL) protocol. The thick access point or thin access point’s wireless switches send and receive the EAP messages to/from the authentication server maintained by the Authentication and Authorization Service using the RADIUS protocol. For Protected C and Classified wireless services deployments the wireless stations communication with an authentication server supported by the black network Authentication and Authorization Service.

Figure 7 - Protected C and Classified Wireless User to Wired Network Connection Communication Types

Figure 7 - Protected C and Classified Wireless User to Wired Network Connection Communication Types

The successful completion of the 802.11 association only provides the wireless workstation with Layer 2 connectivity to the access point. For Layer 3 connectivity the wireless workstation’s 802.11 network interface should be configured with TCP/IP settings (e.g., IP address, network mask, DNS server, etc.) that are valid for the internal wireless user zone. These TCP/IP settings may be pre-configured on the wireless workstations as static values or obtained following successful 802.11 association through DHCP. In the latter case the DHCP server functionality may be implemented on the thick access point or thin access point’s wireless switch, or the thick access point or thin access point’s wireless switch may be configured to relay DHCP requests and responses to/from the DHCP functionality within the Networking Service. For Protected C and Classified wireless services deployments the DHCP requests are relayed to the DHCP functionality within the black network Networking Service.

Once a wireless workstation has Layer 3 connectivity, it is able to participate at the network layer only and has been authenticated at the device level only. The wireless workstations are to be used to access end user services (e.g., desktop services, mail service, web services, etc.) within the operations zone of the departmental network. Internal wireless users can only access these services once they have successfully completed a login at the user level using internal wireless user account credentials configured within the Authentication and Authorization service. Once successfully logged in at the user level they can access the end user services supported by the departmental network. Their access is based on the access privileges defined in the Authentication and Authorization Service and enforced by the wireless workstations and other components within the departmental network.

Internal wireless users are not assigned any administrative privileges that would allow them to change the operating configuration of the wireless workstations that may result in circumvention of any intended security safeguards or countermeasures.

The access points, sensors, and perimeter wireless/wired switch components and internal wireless user perimeter should each support an administrative access control functionality to only allow wireless component administrators access once they have successfully completed the login process. Each component should support an accounts database used to verify the credentials of wireless component administrators during authentication. This database may be supported locally on each component, or the components may each support the ability to communicate with an accounts database supported on a separate component such as an authentication server. If all the components support the use of separate account databases then a single account can be maintained on the authentication server for all wireless component administrator logins. Otherwise a different account needs to be maintained on each component.

It is assumed that the wireless component administrator accounts are maintained within a separate accounts database supported by the departmental network Authentication and Authorization Service and that the RADIUS protocol is used to support the communications between the components and the authentication server. For Protected C and Classified wireless services deployments the black access points, black sensor and black perimeter wireless/wired switch components are administered by black wireless component administrators from the black network. In addition the black access points, black sensor and black perimeter wireless/wired switch components communicate with an authentication server supported by the black network Authentication and Authorization Service.

The internal wireless user perimeter controls the communications between the wireless workstations, access points, sensors, and perimeter black wireless/wired switch components and departmental network core services. Communications across the internal wireless user perimeter are controlled based on TCP/IP ports, source IP addresses and destination IP addresses.

2.2.4 Monitoring

The WIDS sensors monitor the 802.11 Radio Frequency (RF) medium and relay the monitored information back to the WIDS service on the wired LAN for processing. The WIDS system can be used to monitor the RF medium for attack signatures or anomalous behaviour; however, the greatest benefit is in its ability to:

  1. Be configured with the identification of all the authorized access points and stations within the WLAN;
  2. Identify the physical location of all the authorized access points and stations within the WLAN; and
  3. Detect and disable unauthorized access points within the WLAN coverage area.

If thin access points are used and WIDS is implemented within the wireless switch that controls the thin access points, then their functionality may be shared between processing station communications and RF coverage area monitoring. If WIDS is not implemented within the wireless switch then a separate WIDS server and dedicated sensors are required. Dedicated sensors and WIDS server is also required to implement WIDS in a thick access point WLAN deployment. For Protected C and Classified wireless services deployments the WIDS Service is either supported within the perimeter black wireless switch or by a black network WIDS server and black sensors.

2.3 Technology Security Requirement Implementation Points

Table 1 - Wireless User to Wired Network Connection Implementation Points (Table 1) specifies all the technology security requirements that may be considered for the wireless user to wired network connection business use case. The actual technology-related control elements used within a specific wireless services deployment are identified from the approved set of security controls using the process described in Annex 4 (illustrated in Figure 8 – Security Controls and Control Elements). Annex 4 includes examples of how the process is executed using the Protected A/Low Integrity/Low Availability and Protected B/Medium Integrity/Medium Availability security control profiles as the approved set of security controls. These profiles are defined within the ITSG-33 Annex 4.

Figure 8 - Security Controls and Control Elements

Figure 8 - Security Controls and Control Elements

2.3.1 Technology-Related Control Element Summaries

This section provides introductory information to the recommendations presented in Table 1.

The departmental network supports internal user access to end user services using wired workstations with network connectivity through wired LANs. It is assumed that all the technology-related control elements required to secure the internal user access to end user services with network connectivity through wired LANs are implemented prior to the deployment of wireless services. This includes any technology-related control elements implemented on the wired workstations, within the end user services and within other departmental network services. The deployment of wireless services is intended to augment the departmental network with an additional means of providing network connectivity between its internal users and their end user services. It is assumed that the security and functional configuration of the wired workstations used to access the end user services with network connectivity through wired LANs, is used to implement the wireless workstations. The configuration of the wireless workstation is therefore the same as the wired workstation but amended with any functionality or technology-related control elements required to support and secure network connectivity through WLANs. A technology security requirement that is expected to be implemented within the wired workstation configuration and that is required without modification in the wireless workstation configuration will be referred to in this document as a workstation baseline technology security requirement.

AC-2 Account Management

Account management applies to the accounts for wireless component administrator and black wireless component administrators (referred to in the remainder of this section simply as wireless component administrators) required to administer the wireless components (access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter, black access points, black sensors and perimeter black wireless/wired switches). Account management also applies to the internal wireless user accounts used to access the end user services through the wireless workstations.

The wireless components should each support an administrative access control functionality to only allow wireless component administrators access once they have successfully completed the login process. Each component should support an accounts database used to verify the credentials of wireless component administrators during authentication. This database may be supported locally on the component, or the component may support the ability to communicate with a separate accounts database supported on a separate component such as an authentication server. If all the components support the use of separate account databases then a single account per wireless component administrator can be maintained on the authentication server. A single account per black wireless component administrator can be maintained on an authentication server within the black network. Otherwise a different account needs to be maintained on each component.

The internal wireless users authenticate to a single authentication server. This authentication is at the user level and is separate from the 802.1X port-based authentication performed by the wireless workstation. Once successfully authenticated they are able to access the end user services in a single sign-on fashion without having to re-authenticate each time a different end user service is accessed. The internal wireless user accounts are maintained within a separate accounts database supported by the departmental network Authentication and Authorization Service. The Authentication and Authorization Service is also configured with each internal wireless user’s privileges within the end user services. It is assumed that the wireless component administrator accounts are also maintained within a separate accounts database supported by the departmental network Authentication and Authorization Service.

AC-3 Access Enforcement

Access enforcement for wireless component administrators is supported by the wireless components to control what actions a wireless component administrator is authorized to perform once they are successfully authenticated.

The wireless components should each support an administrative access control functionality to control what actions the wireless component administrators can perform based on security policies defined for each component. These policies may be configured within a local policy database on each component, or the component may support the ability to communicate with a policy database supported on a separate component such as an authorization server. If the components support the use of separate policy databases then all security policies can be maintained within a single point for all wireless component administrators. Otherwise separate policies need to be configured on each component.

It is assumed that the policies defining wireless component administrator authorized actions are maintained within a separate policy database supported by the departmental network Authentication and Authorization Service and these policies are enforced within the wireless components. This Authentication and Authorization Service is implemented on the black network to support black wireless administrator access to black wireless components.

Access enforcement for internal wireless users is supported by the wireless workstations and end user services to control what actions a wireless component administrator is authorized to perform once they are successfully authenticated. It is assumed that the policies defining internal wireless user authorized actions are maintained within a separate policy database supported by the departmental network Authentication and Authorization Service and these policies are enforced within the wireless workstations and end user services. For wireless workstations, this is implemented as a workstation baseline technology-related control element.

AC-4 Information Flow Enforcement

The internal wireless user perimeter is configured with policies that define which communications (based on TCP/IP port, source IP address, destination IP address, etc.) are authorized to enter and leave the internal wireless user zone. Only authorized communications are allowed to traverse the internal wireless user perimeter. All unauthorized communications are blocked. Authorized communications that traverse the internal wireless user perimeter may be component-to-service, administrator-to-component, or user-to-service.

Component-to-service communications consist of communications that do not involve an internal wireless user or wireless component administrator workstation. An example would be the access points communicating with an authentication server within the departmental Authentication and Authorization Service. Administrator-to-component communications occur when a wireless component administrator logs into a wireless component for administrative purposes. User-to-service communications consist of those communications between internal wireless workstations and the end user services.

AC-5 Separation of Duties

Separation of duties is related to distinct levels of access and is supported by configuring the access enforcement security policies within the Authentication and Authorization Service so that there are different groups or levels of privileges. A group or level is based on a separate role to be performed by a wireless component or black wireless component administrator within the wireless components. Each wireless component administrator is only assigned group(s) or level(s) of privileges for the role(s) he/she is responsible. The groups or levels of privileges are also defined in a manner that prevents a single wireless component administrator from being assigned enough privileges required to perform fraudulent activity without collusion.

Internal wireless users are less privileged than wireless component administrators and are assigned privileges within the Authentication and Authorization Service to access only what they are authorized to access within the end user services. For wireless workstations, this is implemented as a workstation baseline technology-related control element.

AC-6 Least Privilege

Least privilege is enforced by configuring the access enforcement security policies within the Authentication and Authorization Service so that each internal administrator is only assigned group(s) or level(s) of privileges for the role(s) he/she is responsible.

Internal wireless users are less privileged than wireless component administrators and are assigned privileges within the Authentication and Authorization Service to access only what they are authorized to access within the end user services.

AC-7 Unsuccessful Login Attempts

Account lockout is configured within the Authentication and Authorization Service and enforced on the wireless components and wireless workstations to help prevent unauthorized access through password guessing. For wireless workstations, this is implemented as a workstation baseline technology-related control element.

AC-8 System Use Notification

System use notification messages are displayed to wireless component administrators upon login to the wireless components and to internal wireless users upon login to the wireless workstations. For wireless workstations, this is implemented as a workstation baseline technology security requirement.

AC-9 Previous Logon (Access) Notification

Previous Logon (Access) Notification is configured within the Authentication and Authorization Service and is supported on the wireless components and wireless workstations to help detect unauthorized access using the credentials for a valid account. For wireless workstations, this is implemented as a workstation baseline technology-related control element.

AC-10 Concurrent Session Control

Concurrent session limits are configured within the Authentication and Authorization Service for wireless component administrators and internal wireless users and enforced by the wireless components and wireless workstations. For wireless workstations, this is implemented as a workstation baseline technology-related control element.

AC-11 Session Lock

Session lock is configured within the Authentication and Authorization Service for wireless component administrators and internal wireless user sessions and enforced by the wireless components and wireless workstations. For wireless workstations, this is implemented as a workstation baseline technology-related control element.

AC-16 Security Attributes

Information labelling functionality is supported within the Information Management Service for any information created, processed or stored in the information system.

AC-18 Wireless Access

Internal wireless user access is architected and secured using the guidance in this document.

AC-21 User Based Collaboration and Information Sharing

Access authorizations are configured in the Authentication and Authorization Service for internal wireless users. Functionality is supported on the wireless workstations to determine access authorization granted to another user for collaboration and information sharing. For wireless workstations, this is implemented as a workstation baseline technology-related control element.

AU-3 Content of Audit Records

The information content that can be contained in audit records generated by the wireless components and wireless workstations is dependent on the audit capability of the wireless components and wireless workstations. The auditing functionality of the wireless components and wireless workstations support the ability to send audit records to the Audit Service. For wireless workstations, this is implemented as a workstation baseline technology-related control element.

AU-4 Audit Storage Capacity

The amount of storage required to maintain audit records for the components within the departmental network can be significant. The centralized logging server supported within the departmental network Audit Service would typically not have sufficient capacity for audit record storage, therefore it is assumed that the centralized logging server uses storage maintained by the Information Management Service.

If a wireless component does not support the ability to transmit its audit records to the centralized logging server, then sufficient capacity should be maintained on the wireless component itself.

AU-5 Response to Audit Processing Failures

Auditing involves each wireless component and wireless workstation’s ability to generate audit records and successfully transmit them to the centralized logging server. An audit processing failure is a result of a wireless component and wireless workstation’s inability to generate or store new audit records or to transmit them to the centralized logging server or for the centralized logging server to store the received audit records. This results in the loss of auditing information. The department should define a policy on the actions to take in this instance. Shutting down the information system is the most severe action as it affects availability, but in some cases may be required if a loss of auditing information cannot be tolerated. For wireless workstations, this is implemented as a workstation baseline technology-related control element.

AU-6 Audit Review, Analysis, and Reporting

Audit records are not useful unless the information they contain can be analyzed in an effective manner to report on the occurrence of events of interest. Furthermore the analysis should be holistic in that it can include audit records from multiple components in a collective manner. The Audit Service supports functionality to automatically process audit records from multiple components for events of interest based upon selectable, event criteria.

AU-7 Audit Reduction and Report Generation

Since the amount of audit records can be significant (even to the point that audit records may comprise the largest volume of data within the departmental network) the Audit Service reporting capability should be able to summarize the information contained in individual audit records and subsequently reduce the amount of information or number of audit records to be retained either over a long period or permanently.

AU-8 Time Stamps

In order to support the analysis of audit records to report on events of interest, a method is required to synchronize audit records from multiple components. The method used is for each wireless component or wireless workstation to include a time stamp which identifies the exact time and date that each audit record was created and for the wireless components to synchronize their system clocks with each other. Time synchronization can be achieved in an automated fashion if each wireless component or wireless workstation supports the ability to update its system clock based on communications with a time server supported by the Network Service using a protocol such as Network Time Protocol. For wireless workstations, this is implemented as a workstation baseline technology-related control element.

AU-9 Protection of Audit Information

The audit records may contain information that needs to be protected in terms of their confidentiality (unauthorized access), integrity (modification) or availability (deletion). Access authorizations to audit information and tools within wireless components, wireless workstations and Audit Service are configured within the Authentication and Authorization Service. The enforcement of these access authorizations to protect audit records should be performed at the wireless components, wireless workstations as well as within the Audit Service. For wireless workstations, this is implemented as a workstation baseline technology-related control element.

AU-10 Non-repudiation

Non-repudiation is generally applicable for business transactions or actions performed by a user. Non-repudiation functionality is supported on the wireless workstations for any information created, processed or stored by the internal wireless user on the workstation. Wireless component administrator actions are monitored through the auditing functionality of the wireless components and the Audit Service. For wireless workstations, this is implemented as a workstation baseline technology-related control element.

AU-12 Audit Generation

Authorizations are assigned within the Authentication and Authorization Service for internal wireless users and wireless component administrators. The auditing functionality of the wireless components and wireless workstations support reporting of audit records of authorized and unauthorized user/process events of interest to the Audit Service. The wireless components and wireless workstations support the auditing of user/process events defined in AU-2 and the generation of associated audit records that can be transmitted to the central logging server (implemented within the Audit Service) for analysis and reporting. For wireless workstations, this is implemented as a workstation baseline technology-related control element.

AU-14 Session Audit

Session audit may be required if it is believed that improper user or administrative acts are being performed. The IDS Service can be used to access the unencrypted content of wireless component administrator or internal wireless user communications and log or capture the content to the Audit Service.

CM-5 Access Restrictions for Change

Access enforcement policies defined within the Authentication and Authorization Service are supported by the wireless components and wireless workstations to control what actions a wireless component administrator or internal wireless user is authorized to perform once they are successfully authenticated. Each wireless component and wireless workstation should support the ability to audit the enforcement of access restriction and generate associated audit records that are transmitted to the central logging server maintained by the Audit Service. For wireless workstations, this is implemented as a workstation baseline technology-related control element.

CM-6 Configuration Settings

Each wireless component or wireless workstation should be configured to operate in a mode that only provides the functionality required. Any extraneous functionality or services should be disabled.

Access enforcement is supported by the wireless components or wireless workstations to control what access, or modification privileges a wireless component administrator or internal wireless user has with respect to the wireless component or wireless workstation configuration. Authorizations for access to configuration settings are configured within the Authorization Service and enforced within the access control functionality of the wireless workstations and wireless components. Any changes to the wireless component or wireless workstation configuration should be performed through the CMS and reported to the Audit Service. The File Integrity Service may be used to detect unauthorized changes to the wireless component or wireless workstation configuration. For wireless workstations, this is implemented as a workstation baseline technology security requirement.

CM-7 Least Functionality

Each wireless component and wireless workstation should be configured to operate in a mode that only provides the functionality required. Any extraneous functionality or services should be disabled. For wireless workstations, this is implemented as a workstation baseline technology-related control element.

CM-8 Information System Component Inventory

The CMS retains information pertaining to the authorized configuration of the wireless components and wireless workstations and periodically audits them to verify their operating configurations match their authorized configurations. The WIDS Service may be used to monitor for unauthorized components/devices connected to the internal wireless user zone.

CP-9 Information System Backup

The amount of storage required to maintain system and user-level information backups for the departmental network can be significant. The Backup and Recovery Service therefore uses storage maintained by the Information Management Service to store backups of system and user-level information.

The Backup and Recovery Service periodically accesses the wireless components with administrator privileges to create backups of their system-level information. The Backup and Recovery Service periodically accesses and creates backups of the internal wireless user data maintained by the Information Management Service.

CP-10 Information System Recovery and Reconstitution

The Backup and Recovery Service accesses the system-level information backups maintained by the Information Management Service for recovery purposes. The wireless components’ system-level information is used to restore a wireless component to a known state following failure or compromise.

IA-2 User Identification and Authentication (Organizational Users)

The authentication method for wireless component administrators and internal wireless users will depend on the level of protection required and may include password/PINs, multifactor authentication, one time password, certificate-based authentication, or group authenticators. For wireless workstations, this is implemented as a workstation baseline technology-related control element.

IA-3 Device Identification and Authentication

Wireless workstations bi-directionally authenticate themselves to the thick access points or perimeter wireless switch (if thin access points are used) using cryptography. The authentication is supported by the 802.1X port-based authentication functionality of the Authentication and Authorization Service.

IA-4 Identifier Management

The use of dynamic management of identifiers, attributes, and associated access authorizations is not applicable to the business use case.

IA-5 Authenticator Management

The authentication method for wireless component administrators and internal wireless users will depend on the level of protection required and may include password/PINs, multifactor authentication, one time password, certificate-based authentication, or group authenticators. If a password/PIN is used for wireless component administrators, the password/PIN will comply with the password complexity requirements. If the authentication method for wireless component administrators or internal wireless users is certificate-based and the certificates are issued by the departmental network PKI Service, the authentication process will:

  1. Validate certificates by constructing a certification path to a trusted certificate authority;
  2. Establish user control of the corresponding private key; and
  3. Map the authenticated identity to the user account. For wireless workstations, this is implemented as a workstation baseline technology-related control element.
IA-6 Authenticator Feedback

Feedback of authentication information is obscured during wireless component administrator and internal wireless user logins by the authentication mechanism supported on the wireless components and wireless workstations. For wireless workstations, this is implemented as a workstation baseline technology-related control element.

IA-7 Cryptographic Module Authentication

If a cryptographic module is used within the authentication method for wireless component administrators or internal wireless users, its use will meet the requirements of applicable Government of Canada (GC) guidance for authentication to a cryptographic module. For wireless workstations, this is implemented as a workstation baseline technology-related control element.

SC-2 Application Partitioning

The wireless component administrators log into and administer the wireless components whereas the internal wireless users log into the wireless workstations. The wireless component administrator and internal wireless user functionalities are separated both in function and method of access. The Network Service includes support for a management sub-zone to separate wireless component administrator communications from internal wireless user communications.

SC-3 Security Function Isolation

The functionality accessed by internal wireless users (e.g., access to end user services) is separated by the security functionality (accessed by wireless component administrators) of the wireless components. The Network Service includes support for a management sub-zone to separate wireless component administrator communications from internal wireless user communications.

SC-4 Information in Shared Resources

Authorizations are assigned within the Authentication and Authorization Service for internal wireless users and wireless component administrators that define what information the users and administrators are authorized to access. These authorizations prevent unauthorized and unintended information transfer via shared system resources. For wireless workstations, this is implemented as a workstation baseline technology-related control element.

SC-5 Denial of Service Protection

The WIDS Service together with its sensors (overlay mode WIDS) or access points (integrated mode WIDS) monitor for denial of service attacks originating from the internal wireless user zone against the departmental network or other networks while the IDS Service monitors for denial of service attacks within the rest of the departmental network.

SC-6 Resource Priority

The Network Service’s routers support the assignment of traffic volume thresholds for network traffic types to limit use of resources by priority through traffic types.

SC-7 Boundary Protection

The internal wireless user perimeter is configured with policies that define which communications (based on TCP/IP port, source IP address, destination IP address, etc.) are authorized to enter and leave the internal wireless user zone.

SC-8 Transmission Integrity

Encrypted communications are supported between the wireless workstations and the thick (black) access points or to the (black) perimeter wireless switch if thin access points are used. The encryption protects the integrity and confidentiality of the information transmitted in the internal wireless user zone.

SC-9 Transmission Confidentiality

Encrypted communications are supported between the wireless workstations and the thick (black) access points or to the (black) perimeter wireless switch if thin access points are used. The encryption protects the integrity and confidentiality of the information transmitted in the internal wireless user zone.

SC-10 Network Disconnect

The internal wireless user perimeter can be configured to terminate network connections after a defined period of inactivity.

SC-11 Trusted Path

Wireless component administrators access the wireless components using their administrator workstations located within the management sub-zone implemented by the Network Service. The information flow policies enforced within the restricted zone, operations zone and internal wireless user perimeters ensure that administration of the wireless components can only be performed from wireless component administrator workstations located in the management sub-zone. The path between the wireless component administrators and the wireless components is therefore trusted.

Authentication and authorizations to security functions are assigned within the Authentication and Authorization Service for wireless component administrators and enforced within the login and access control functionality of the wireless components.

SC-12 Cryptographic Key Establishment and Management

Cryptographic key management for keys used by wireless component administrators or internal wireless users (if PKI based authentication is used) is supported by the PKI Service.

SC-13 Use of Cryptography

Cryptographic mechanisms used by wireless component administrators or internal wireless users (if PKI based authentication is used) is supported by the PKI Service.

SC-18 Mobile Code

The wireless workstations are configured with malicious code defence agents that operate under the policies defined within the MCDS to detect and inspect data for mobile code and to take the appropriate action. For wireless workstations, this is implemented as a workstation baseline technology-related control element.

SC-20 Secure Name /Address Resolution Service (Authoritative Source)

This is supported by the DNS functionality of the Network Service.

SC-21 Secure Name /Address Resolution Service (Recursive or Caching Resolver)

This is supported by the DNS functionality of the Network Service.

SC-22 Architecture and Provisioning for Name/Address Resolution Service

This is supported by the DNS functionality of the Network Service.

SC-23 Session Authenticity

Encrypted communications are supported between the wireless workstations and the thick (black) access points or to the (black) perimeter wireless switch if thin access points are used. The encryption protects the integrity and confidentiality of the information transmitted in the internal wireless user zone including the authenticity of the sessions.

SC-24 Fail in Known State

The wireless components can fail to a known-state for specific types of failures.

SC-27 Operating System-Independent Applications

The use of operating-system independent applications may not be possible for any wireless component applications as the wireless components are typically selected from a single vendor to facilitate successful integration with each other. Moreover, the wireless components are typically appliance based components whose operation is supported through firmware rather than a standard operating system. The use of operating-system independent applications may not be practical for wireless workstations as internal wireless users are typically only comfortable with a single consistent user interface.

SC-28 Protection of Information at Rest

Wireless workstations are configured to employ CSEC-approved cryptography to ensure the confidentiality of Protected and Classified data at rest. For wireless workstations, this is implemented as a workstation baseline technology-related control element.

SC-29 Heterogeneity

The use of heterogeneity through selection of diverse information technologies is supported within the wireless components. (Note: This may be difficult to achieve if the wireless components should be selected from a single vendor to facilitate successful integration with each other).

SC-30 Virtualization Techniques

The wireless components use abstraction techniques to present information system components as other types of components. (Note: This may be difficult to achieve if the wireless components are firmware-based appliances rather than operating system-based components. Firmware-based appliances are typically less flexible than operating system-based components in their configuration and therefore it may not allow for the possibility to configure the appliances so they appear as other types of components).

SC-32 Information System Partitioning

The Network Service partitions the departmental network into different zones where the components residing in each zone are subject to the security policies of that zone. These zones include the restricted zone, operations zone, public access zone, management sub-zone, and internal wireless user zone.

SC-33 Transmission Preparation Integrity

The wireless components protect the integrity of information during data aggregation, packaging, and transformation in preparation for transmission.

SC-34 Non-Modifiable Executable Programs

The wireless components load and execute their operating system and applications from hardware-enforced, read-only media.

SC-100 Source Authentication

The security mechanisms for source authentication are implemented within the wireless workstations and the end user services. For wireless workstations, this is implemented as a workstation baseline technology-related control element.

SI-2 Flaw Remediation

The Remediation Service automates the collection, analysis, and provisioning of software and software updates to the wireless components that are compatible with the Remediation Service.

SI-3 Malicious Code Protection

The wired workstations are configured with malicious code defence agents that operate under the policies defined within the MCDS to detect and inspect data to detect/eradicate malicious code. For wireless workstations, this is implemented as a workstation baseline technology-related control element.

SI-4 Information System Monitoring

The WIDS Service together with its sensors (overlay mode WIDS) or access points (integrated mode WIDS) detect attacks, and provide identification of unauthorized use of the system within the internal wireless user zone while the IDS Service monitors for denial of service attacks within the rest of the departmental network.

SI-6 Security Functionality Verification

The wireless components and wireless workstations verify the correct operation of their own critical security functions upon start-up or periodically following start-up. For wireless workstations, this is implemented as a workstation baseline technology-related control element.

SI-7 Software and Information Integrity

The CMS periodically accesses the wireless components with wireless administrator privileges to obtain the current operating configuration and to compare it with an archived copy of the approved configuration to detect any unauthorized changes. The File Integrity Service supports the functionality to detect unauthorized modifications to files on components that support the installation of a File Integrity Service agent.

SI-8 Spam Protection

The wireless workstations are configured with malicious code defence agents that operate under the policies defined within the Mail Service SPAM protection functionality to inspect data to detect/eradicate malicious code. For wireless workstations, this is implemented as a workstation baseline technology-related control element.

SI-9 Information Input Restrictions

Access enforcement including the capability to input information for wireless component administrators and internal wireless users is supported by the wireless components and wireless workstations to control what actions a wireless component administrator or internal wireless user is authorized to perform once they are successfully authenticated. This includes what internal wireless users can access within the end user services. The policies defining authorized actions are maintained within Authentication and Authorization Service. This Authentication and Authorization Service is implemented on the black network to support black wireless administrator access to black wireless components.

For wireless workstations, this is implemented as a workstation baseline technology-related control element.

SI-10 Information Input Validation

Access enforcement including the capability to input information for wireless component administrators and internal wireless users is supported by the wireless components and wireless workstations to control what actions a wireless component administrator or internal wireless user is authorized to perform once they are successfully authenticated. This includes what internal wireless users can access within the end user services. The policies defining authorized actions are maintained within the Authentication and Authorization Service. This Authentication and Authorization Service is implemented on the black network to support black wireless administrator access to black wireless components.

The wireless components, wireless workstations and end user services check input information for accuracy, completeness, validity, and authenticity. For wireless workstations, this is implemented as a workstation baseline technology-related control element.

SI-11 Error Handling

The wireless components and wireless workstations support the auditing of events including error conditions and the storage of audit records on the component or workstation itself. The wireless components and workstations also support the transmission of audit records to a centralized logging server maintained by the Audit Service so that audit records from all components can be managed and analyzed in a collective manner. For wireless workstations, this is implemented as a workstation baseline technology-related control element.

2.3.2 Implementation Point Recommendations

This section provides a table of recommendations on where in the reference high-level design the technology-related control elements may be implemented. Only the technology-related control elements identified from the system security controls need to be considered for each business use case rather than all technology-related control elements identified in each table.

Table 1 recommends implementation points for the wireless user to wired network connection business use case. The tables also identify which technology-related control elements may be implemented as system-specific (S), common (C) or hybrid (H). A system-specific technology-related control element is addressed either solely by the components added to the departmental network for the deployment of wireless services or a combination of those components and safeguards or countermeasures that exist within the departmental network prior to the deployment of wireless services. A common technology-related control element is implemented by utilizing one or more safeguards or countermeasures that exist within the departmental network prior to the deployment of wireless services and which does not require any modification. A hybrid technology-related control element is implemented by utilizing one or more safeguards or countermeasures that exist within the departmental network prior to the deployment of wireless services and which require modification.

Table 1 - Wireless User to Wired Network Connection Implementation Points

Security Control Control Elements Implementation Points Type
S/C/H
AC-2 Account Management AC-2-1 The organization employs automated mechanisms to support the management of information system accounts.

Implementation Point(s): Authentication and Authorization Service

Description: Automated mechanisms are implemented within the Authentication and Authorization Service to manage internal wireless user accounts and wireless component administrator accounts. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service for black wireless component administrator accounts.

 C
AC-2 Account Management AC-2-2 The information system automatically terminates temporary and emergency accounts after [Assignment: organization-defined time period for each type of account].

Implementation Point(s): Authentication and Authorization Service

Description: Automated mechanisms are implemented within the Authentication and Authorization Service to terminate temporary or emergency accounts created for internal wireless users and wireless component administrators. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service for black wireless component administrator accounts.

 C
AC-2 Account Management AC-2-3 The information system automatically disables inactive accounts after [Assignment: organization-defined time period].

Implementation Point(s): Authentication and Authorization Service

Description: Automated mechanisms are implemented within the Authentication and Authorization Service to disable inactive internal wireless user accounts and wireless component administrator accounts. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service for black wireless component administrator accounts.

 C
AC-2 Account Management AC-2-4 The information system automatically audits account creation, modification, disabling, and termination actions and notifies, as required, appropriate individuals.

Implementation Point(s): Authentication and Authorization Service and Audit Service

Description: Automated mechanisms are implemented within the Authentication and Authorization Service to report to the Audit Service, account management actions for internal wireless users and wireless component administrators. The Audit Service will notify, as required, appropriate individuals. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service and Audit Service for black wireless component administrator accounts.

 C
AC-2 Account Management AC-2-5 The organization: (a) Requires that users log out when [Assignment: organization defined time-period of expected inactivity and/or description of when to log out]; (b) Determines normal time-of-day and duration usage for information system accounts; (c) Monitors for atypical usage of information system accounts; and (d) Reports atypical usage to designated organizational officials.

Implementation Point(s): Authentication and Authorization Service and Audit Service.

Description: Automated mechanisms are implemented within the Authentication and Authorization Service to report to the Audit Service, atypical usage of internal wireless users and wireless component administrator accounts based on normal time-of-day and duration usage. The Audit Service will notify, as required, appropriate individuals of atypical usage. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service and Audit Service for black wireless component administrator accounts.

 C
AC-2 Account Management AC-2-6 The information system dynamically manages user privileges and associated access authorizations.

Implementation Point(s): Authentication and Authorization Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wired user perimeter and black wireless components.

Description: Privileges and access authorizations are dynamically managed within the Authentication and Authorization Service for internal wireless users and wireless component administrators. The wireless component administrator privileges and access authorizations are enforced within the administrative access control functionality of the access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter components. The internal wireless user privileges and access authorizations are enforced within the wireless workstations. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service and access control functionality of the black wireless components, for black wireless component administrator accounts.

 S
AC-2 Account Management AC-2-7 The organization: (a) establishes and administers privileged user accounts in accordance with a role-based access scheme that organizes information system and network privileges into roles; and (b) tracks and monitors privileged role assignments.

Implementation Point(s): Authentication and Authorization Service, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Wireless component administrator accounts are organized within the Authentication and Authorization Service by roles that are based on privileges. These privileges are enforced within the access control functionality of the access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service and access control functionality of the black wireless components, for black wireless component administrator accounts. This security control requirement does not apply to internal wireless users as their accounts are unprivileged.

 S
AC-3 Access Enforcement AC-3-A The information system enforces approved authorizations for logical access to the system in accordance with applicable policy.

Implementation Point(s): Authentication and Authorization Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Authorizations are assigned within the Authentication and Authorization Service for internal wireless users and wireless component administrators. The wireless component administrator authorizations are enforced within the access control functionality of the access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter. The internal wireless user authorizations are enforced within the access control functionality of the wireless workstations. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service and access control functionality of the black wireless components, for black wireless component administrator accounts.

 S
AC-3 Access Enforcement AC-3-2 The information system enforces dual authorization, based on organizational policies and procedures for [Assignment: organization-defined privileged commands].

Implementation Point(s): Authentication and Authorization Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Dual authorizations for [Assignment: organization-defined privileged commands] are assigned within the Authentication and Authorization Service for internal wireless users and wireless component administrators. The wireless component administrator authorizations are enforced within the access control functionality of the access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter. The internal wireless user authorizations are enforced within the access control functionality of the wireless workstations. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service and access control functionality of the black wireless components, for black wireless component administrator accounts.

 S
AC-3 Access Enforcement AC-3-3 The information system enforces [Assignment: organization-defined nondiscretionary access control policies] over [Assignment: organization-defined set of users and resources] where the policy rule set for each policy specifies: (a) Access control information (i.e., attributes) employed by the policy rule set (e.g., position, nationality, age, project, time of day); and (b) Required relationships among the access control information to permit access.

Implementation Point(s): Authentication and Authorization Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The [Assignment: organization-defined nondiscretionary access control policies] over [Assignment: organization-defined set of users and resources] are assigned within the Authentication and Authorization Service for internal wireless users and wireless component administrators. The wireless component administrator policies are enforced within the access control functionality of the access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter. The internal wireless user policies are enforced within the access control functionality of the wireless workstations. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service and access control functionality of the black wireless components, for black wireless component administrator accounts.

 S
AC-3 Access Enforcement AC-3-4 The information system enforces a Discretionary Access Control (DAC) policy that: (a) Allows users to specify and control sharing by named individuals or groups of individuals, or by both; (b) Limits propagation of access rights; and (c) Includes or excludes access to the granularity of a single user.

Implementation Point(s): Authentication and Authorization Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Discretionary Access Control policies are configured within the Authentication and Authorization Service and enforced within the access control functionality of the wireless workstations (when accessing end user services), access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter. Discretionary Access Control policies are configured to (a) allow users to specify and control sharing by named individuals or groups of individuals, or by both; (b) limit propagation of access rights; and (c) include or exclude access to the granularity of a single user. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service and access control functionality of the black wireless components, for black wireless component administrator accounts.

 S
AC-3 Access Enforcement AC-3-5 The information system prevents access to [Assignment: organization-defined security-relevant information] except during secure, non-operable system states.

Implementation Point(s): Authentication and Authorization Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Access to [Assignment: organization-defined security-relevant information] is assigned within the Authentication and Authorization Service for internal wireless users and wireless component administrators. The wireless component administrator access policies are enforced within the access control functionality of the access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter. The internal wireless user access policies are enforced within the access control functionality of the wireless workstations. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service and access control functionality of the black wireless components, for black wireless component administrator accounts.

 S
AC-3 Access Enforcement AC-3-6 The organization encrypts or stores off-line in a secure location [Assignment: organization-defined user and/or system information].

Implementation Point(s): Information Management Service

Description: Information specified by [Assignment: organization-defined user and/or system information] is secured by the Information Management Service using encryption.

 C
AC-4 Information Flow Enforcement AC-4-A The information system enforces approved authorizations for controlling the flow of information within the system and between interconnected systems in accordance with applicable policy.

Implementation Point(s): Internal wireless user perimeter

Description: The internal wireless user perimeter controls communications leaving and entering the internal wireless user zone using both firewalling and content checking functionality in accordance with approved authorizations.

 S
AC-4 Information Flow Enforcement AC-4-1 The information system enforces information flow control using explicit security attributes on information, source, and destination objects as a basis for flow control decisions.

Implementation Point(s): NA

Description: Information flow control enforcement using explicit labels on information, source applies to controlling information flow between information systems with different classifications (e.g.., protected or classified levels) which is not an applicable requirement for the business use case.

 -
AC-4 Information Flow Enforcement AC-4-2 The information system enforces information flow control using protected processing domains (e.g., domain type-enforcement) as a basis for flow control decisions.

Implementation Point(s): Internal wireless user perimeter

Description: The internal wireless user perimeter controls communications leaving and entering the internal wireless user zone using protected processing domains (e.g., domain type-enforcement).

 S
AC-4 Information Flow Enforcement AC-4-3 The information system enforces dynamic information flow control based on policy that allows or disallows information flows based on changing conditions or operational considerations.

Implementation Point(s): Internal wireless user perimeter

Description: The internal wireless user perimeter enforces dynamic information flow control of communications leaving and entering the internal wireless user zone.

 S
AC-4 Information Flow Enforcement AC-4-4 The information system prevents encrypted data from bypassing content-checking mechanisms.

Implementation Point(s): Internal wireless user perimeter.

Description: The internal wireless user perimeter performs content checking and is configured to block any encrypted communications it encounters.

 S
AC-4 Information Flow Enforcement AC-4-5 The information system enforces [Assignment: organization-defined limitations on the embedding of data types within other data types].

Implementation Point(s): Internal wireless user perimeter

Description: The internal wireless user perimeter performs content checking and is configured to block communications that do not comply with the [Assignment: organization-defined limitations on the embedding of data types within other data types].

 S
AC-4 Information Flow Enforcement AC-4-6 The information system enforces information flow control on metadata.

Implementation Point(s): Internal wireless user perimeter

Description: The internal wireless user perimeter performs content checking and is configured to control communications leaving and entering the internal wireless user zone based upon metadata.

 S
AC-4 Information Flow Enforcement AC-4-7 The information system enforces [Assignment: organization-defined one-way flows] using hardware mechanisms.

Implementation Point(s): NA

Description: Enforcement of one-way flows using hardware mechanisms is normally a requirement for transferring information between information systems of different security levels which is not an applicable to the business use case.

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AC-4 Information Flow Enforcement AC-4-8 The information system enforces information flow control using [Assignment: organization-defined security policy filters] as a basis for flow control decisions.

Implementation Point(s): Internal wireless user perimeter

Description: The internal wireless user perimeter performs content checking and is configured to use [Assignment: organization-defined security policy filters] as a basis for flow control decisions.

 S
AC-4 Information Flow Enforcement AC-4-9 The information system enforces the use of human review for [Assignment: organization-defined security policy filters] when the system is not capable of making an information flow control decision.

Implementation Point(s): NA

Description: Human reviews are not within scope of the business use case.

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AC-4 Information Flow Enforcement AC-4-10 The information system provides the capability for a privileged administrator to enable/disable [Assignment: organization-defined security policy filters].

Implementation Point(s): Internal wireless user perimeter

Description: The internal wireless user perimeter performs content checking and the [Assignment: organization-defined security policy filters] implemented for content checking can be enabled and disabled by a wireless component administrator.

 S
AC-4 Information Flow Enforcement AC-4-11 The information system provides the capability for a privileged administrator to configure [Assignment: organization-defined security policy filters] to support different security policies.

Implementation Point(s): Internal wireless user perimeter

Description: The internal wireless user perimeter performs content checking and the [Assignment: organization-defined security policy filters] implemented for content checking can be configured by a wireless component administrator.

 S
AC-4 Information Flow Enforcement AC-4-12 The information system, when transferring information between different security domains, identifies information flows by data type specification and usage.

Implementation Point(s): Internal wireless user perimeter

Description: The internal wireless user perimeter identifies information flows by data type specification and usage.

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AC-4 Information Flow Enforcement AC-4-13 The information system, when transferring information between different security domains, decomposes information into policy-relevant subcomponents for submission to policy enforcement mechanisms.

Implementation Point(s): Internal wireless user perimeter

Description: The internal wireless user perimeter decomposes information into policy-relevant subcomponents for submission to policy enforcement mechanisms.

 S
AC-4 Information Flow Enforcement AC-4-14 The information system, when transferring information between different security domains, implements policy filters that constrain data structure and content to [Assignment: organization-defined information security policy requirements].

Implementation Point(s): Internal wireless user perimeter

Description: The internal wireless user perimeter implements policy filters that constrain data structure and content to [Assignment: organization-defined information security policy requirements].

 S
AC-4 Information Flow Enforcement AC-4-15 The information system, when transferring information between different security domains, detects unsanctioned information and prohibits the transfer of such information in accordance with the security policy.

Implementation Point(s): Internal wireless user perimeter

Description: The internal wireless user perimeter detects unsanctioned information and prohibits the transfer of such information in accordance with the security policy.

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AC-4 Information Flow Enforcement AC-4-17 The information system: (a) Uniquely identifies and authenticates source and destination domains for information transfer; (b) Binds security attributes to information to facilitate information flow policy enforcement; and (c) Tracks problems associated with the security attribute binding and information transfer.

Implementation Point(s): Internal wireless user perimeter

Description: The Internal wireless user perimeter (a) uniquely identifies and authenticates source and destination domains for information transfer; (b) binds security attributes to information to facilitate information flow policy enforcement; and (c) logs problems associated with the security attribute binding and information transfer.

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AC-5 Separation of Duties AC-5-C The organization implements separation of duties through assigned information system access authorizations.

Implementation Point(s): Authentication and Authorization Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Authorizations are assigned within the Authentication and Authorization Service to enforce separation of duties for internal wireless users and wireless component administrators. The wireless component administrator policies are enforced within the access control functionality of the access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter. The internal wireless user policies are enforced within the access control functionality of the wireless workstations. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service and access control functionality of the black wireless components, for black wireless component administrator accounts.

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AC-6 Least Privilege AC-6-4 The information system provides separate processing domains to enable finer-grained allocation of user privileges.

Implementation Point(s): Internal wireless user perimeter

Description: The internal wireless user perimeter keeps the wireless workstations in their own network subnet to establish a separate processing domain.

 S
AC-7 Unsuccessful Login Attempts AC-7-A The information system enforces a limit of [Assignment: organization-defined number] consecutive invalid access attempts by a user during a [Assignment: organization-defined time period].

Implementation Point(s): Authentication and Authorization Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: A consecutive invalid access attempts limit of [Assignment: organization-defined number] is configured within the Authentication and Authorization Service for internal wireless users and wireless component administrators and enforced within the login functionality of the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service and login functionality of the black wireless components, for black wireless component administrator accounts.

 S
AC-7 Unsuccessful Login Attempts AC-7-B The information system automatically [Selection: locks the account/node for an [Assignment: organization-defined time period]; locks the account/node until released by an administrator; delays next login prompt according to [Assignment: organization-defined delay algorithm]] when the maximum number of unsuccessful attempts is exceeded. The control applies regardless of whether the login occurs via a local or network connection.

Implementation Point(s): Authentication and Authorization Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Account lockout is configured within the Authentication and Authorization Service for internal wireless users and wireless component administrators and enforced within the login functionality of the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter. The account lockout functionality automatically [Selection: locks the account/node for an [Assignment: organization-defined time period]; locks the account/node until released by an administrator; delays next login prompt according to [Assignment: organization-defined delay algorithm]] when the maximum number of unsuccessful attempts is exceeded. The control applies regardless of whether the login occurs via a local or network connection. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service and login functionality of the black wireless components, for black wireless component administrator accounts.

 S
AC-7 Unsuccessful Login Attempts AC-7-1 The information system automatically locks the account/node until released by an administrator when the maximum number of unsuccessful attempts is exceeded.

Implementation Point(s): Authentication and Authorization Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Account lockout is configured within the Authentication and Authorization Service for internal wireless users and wireless component administrators and enforced within the login functionality of the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter. The account lockout functionality account/node until released by an administrator when the maximum number of unsuccessful attempts is exceeded. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service and login functionality of the black wireless components, for black wireless component administrator accounts.

 S
AC-7 Unsuccessful Login Attempts AC-7-2 The information system provides additional protection for mobile devices accessed via login by purging information from the device after [Assignment: organization-defined number] consecutive, unsuccessful login attempts to the device.

Implementation Point(s): Wireless workstations

Description: Any use of mobile devices attached to the wireless workstations for information storage (e.g., USB memory sticks, external hard disk drives, etc.) which require login prior to information access, purge information from the device after [Assignment: organization-defined number] consecutive, unsuccessful login attempts to the device.

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AC-8 System Use Notification AC-8-A The information system displays an approved system use notification message or banner before granting access to the system that provides privacy and security notices in accordance with the TBS Policy on the Use of Electronic Networks.

Implementation Point(s): Wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Login banners are configured on the wireless workstations and viewed by internal wireless users. Login banners are configured on the access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter and viewed by wireless component administrators. Login banners are configured on the black wireless components for black wireless component administrator logins. Login banners display an approved system use notification message. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service and login functionality of the black wireless components, for black wireless component administrator accounts.

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AC-8 System Use Notification AC-8-B The information system retains the notification message or banner on the screen until users take explicit actions to log on to or further access the information system.

Implementation Point(s): Wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Login banners are configured on the wireless workstations and viewed by internal wireless users. Login banners are configured on the access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter and viewed by wireless component administrators. Login banners are configured on the black wireless components for black wireless component administrator logins. The notification message or banner remains visible until users take explicit actions to log on to or further access the information system. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service and login functionality of the black wireless components, for black wireless component administrator accounts.

 S
AC-8 System Use Notification AC-8-C The information system, for publicly accessible systems: (a) displays the system use information when appropriate, before granting further access; (b) displays references, if any, to monitoring, recording, or auditing that are consistent with privacy accommodations for such systems that generally prohibit those activities; and (c) includes in the notice given to public users of the information system, a description of the authorized uses of the system.

Implementation Point(s): NA

Description: The use of publicly accessible systems is not applicable to the business use case.

 -
AC-9 Previous Logon (Access) Notification AC-9-A The information system notifies the user, upon successful logon (access), of the date and time of the last logon (access).

Implementation Point(s): Authentication and Authorization Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Date and time of the last logon notification is supported within the Authentication and Authorization Service for internal wireless users and wireless component administrators and provided to the user within the login functionality of the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service and login functionality of the black wireless components, for black wireless component administrator accounts.

 S
AC-9 Previous Logon (Access) Notification AC-9-1 The information system notifies the user, upon successful logon/access, of the number of unsuccessful logon/access attempts since the last successful logon /access.

Implementation Point(s): Authentication and Authorization Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Unsuccessful login notification is supported within the Authentication and Authorization Service for internal wireless users and wireless component administrators and provided to the user within the login functionality of the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service and login functionality of the black wireless components, for black wireless component administrator accounts.

 S
AC-9 Previous Logon (Access) Notification AC-9-2 The information system notifies the user of the number of [Selection: successful logins/accesses; unsuccessful login/access attempts; both] during [Assignment: organization-defined time period].

Implementation Point(s): Authentication and Authorization Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The number of [Selection: successful logins/accesses; unsuccessful login/access attempts; both] during [Assignment: organization-defined time period] is maintained within the Authentication and Authorization Service for internal wireless users and wireless component administrators and provided to the user within the login functionality of the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service and login functionality of the black wireless components, for black wireless component administrator accounts.

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AC-9 Previous Logon (Access) Notification AC-9-3 The information system notifies the user of [Assignment: organization-defined set of security- related changes to the user’s account] during [Assignment: organization-defined time period].

Implementation Point(s): Authentication and Authorization Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Notification of [Assignment: organization-defined set of security- related changes to the user’s account] during [Assignment: organization-defined time period] is supported within the Authentication and Authorization Service for internal wireless users and wireless component administrators and provided to the user within the login functionality of the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service and login functionality of the black wireless components, for black wireless component administrator accounts.

 S
AC-10 Concurrent Session Control AC-10-A The information system limits the number of concurrent sessions for each system account to [Assignment: organization-defined number].

Implementation Point(s): Authentication and Authorization Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Number of concurrent sessions limit is configured within the Authentication and Authorization Service for internal wireless users and wireless component administrators and enforced within the login functionality of the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service and login functionality of the black wireless components, for black wireless component administrator accounts.

 S
AC-11 Session Lock AC-11-A The information system prevents further access to the system by initiating a session lock after [Assignment: organization-defined time period] of inactivity or upon receiving a request from a user.

Implementation Point(s): Authentication and Authorization Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Session lock is configured within the Authentication and Authorization Service for internal wireless users and wireless component administrators and enforced within the login functionality of the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service and login functionality of the black wireless components, for black wireless component administrator accounts.

 S
AC-11 Session Lock AC-11-B The information system retains the session lock until the user re-establishes access using established identification and authentication procedures.

Implementation Point(s): Authentication and Authorization Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Session lock is configured within the Authentication and Authorization Service for internal wireless users and wireless component administrators and enforced within the login functionality of the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service and login functionality of the black wireless components, for black wireless component administrator accounts. Session lock is released following successful re-login.

 S
AC-11 Session Lock AC-11-1 The information system session lock mechanism, when activated on a device with a display screen, places a publically viewable pattern onto the associated display, hiding what was previously visible on the screen.

Implementation Point(s): Wireless workstations

Description: Workstation screen-lock functionality is configured and enforced by the wireless workstations to display (when activated) a publically viewable pattern onto the associated display, hiding what was previously visible on the screen.

 S
AC-16 Security Attributes AC-16-A The information system supports and maintains the binding of [Assignment: organization-defined security attributes] to information in storage, in process, and in transmission.

Implementation Point(s): Information Management Service

Description: Information labelling functionality is supported within the Information Management Service for any information created, processed or stored in the information system.

 C
AC-16 Security Attributes AC-16-1 The information system dynamically reconfigures security attributes in accordance with an identified security policy as information is created and combined.

Implementation Point(s): Authentication and Authorization Service and Information Management Service

Description: Security attributes for information that is created and combined and maintained by the Information Management Service are dynamically reconfigured by the Authentication and Authorization Service.

 C
AC-16 Security Attributes AC-16-2 The information system allows authorized entities to change security attributes.

Implementation Point(s): Authentication and Authorization Service and Information Management Service

Description: Security attributes assigned through the Authentication and Authorization Service for information maintained within the Information Management Service can be modified by authorized users.

 C
AC-16 Security Attributes AC-16-3 The information system maintains the binding of security attributes to information with sufficient assurance that the information--attribute association can be used as the basis for automated policy actions.

Implementation Point(s): Information Management Service

Description: Information labelling functionality is supported within the Information Management Service for any information created, processed or stored in the information system.

 C
AC-16 Security Attributes AC-16-4 The information system allows authorized users to associate security attributes with information.

Implementation Point(s): Authentication and Authorization Service and Information Management Service

Description: Authorized internal wireless users and wireless component administrators can associate security attributes assigned through the Authentication and Authorization Service to information maintained within the Information Management Service.

 C
AC-16 Security Attributes AC-16-5 The information system displays security attributes in human-readable form on each object output from the system to system output devices to identify [Assignment: organization-identified set of special dissemination, handling, or distribution instructions] using [Assignment: organization- identified human readable, standard naming conventions].

Implementation Point(s): Authentication and Authorization Service and Information Management Service

Description: Security attributes assigned through the Authentication and Authorization Service to information maintained within the Information Management Service is displayed in human-readable form on each object output from the system to system output devices to identify [Assignment: organization-identified set of special dissemination, handling, or distribution instructions] using [Assignment: organization- identified human readable, standard naming conventions].

 C
AC-18 Wireless Access AC-18-B The organization monitors for unauthorized wireless access to the information system.

Implementation Point(s): WIDS Service, wireless access points and sensors.

Description: The WIDS service together with its sensors (overlay mode WIDS) or access points (integrated mode WIDS) monitor for and report unauthorized wireless components. For Protected C and Classified wireless services deployments the WIDS Service is implemented within the black network using either black sensors (overlay mode WIDS) or black access points (integrated mode WIDS).

 S
AC-18 Wireless Access AC-18-C The organization authorizes wireless access to the information system prior to connection.

Implementation Point(s): Authentication and Authorization Service and wireless workstations.

Description: Wireless workstations must successfully complete 802.11 associations through 802.1X port-based authentication supported by the Authentication and Authorization Service.

 S
AC-18 Wireless Access AC-18-D The organization enforces requirements for wireless connections to the information system.

Implementation Point(s): Authentication and Authorization Service and wireless workstations.

Description: Wireless workstations must successfully complete 802.11 associations through 802.1X port-based authentication supported by the Authentication and Authorization Service.

 S
AC-18 Wireless Access AC-18-1 The information system protects wireless access to the system using authentication and encryption.

Implementation Point(s): Wireless workstations, access points and perimeter wireless switch.

Description: Wireless workstations use 802.1X port-based authentication and AES encrypted communications are supported between the wireless workstations 802.11 network interfaces and the thick access points or to the wireless switch if thin access points are used.

 S
AC-18 Wireless Access AC-18-2 The organization monitors for unauthorized wireless connections to the information system, including scanning for unauthorized wireless access points [Assignment: organization-defined frequency], and takes appropriate action if an unauthorized connection is discovered.

Implementation Point(s): WIDS Service, access points and sensors.

Description: The WIDS service together with its sensors (overlay mode WIDS) or access points (integrated mode WIDS) monitor for and report unauthorized wireless components including scanning for unauthorized wireless access points [Assignment: organization-defined frequency]. For Protected C and Classified wireless services deployments the WIDS Service is implemented within the black network using either black sensors (overlay mode WIDS) or black access points (integrated mode WIDS).

 S
AC-18 Wireless Access AC-18-4 The organization does not allow users to independently configure wireless networking capabilities.

Implementation Point(s): Authentication and Authorization Service and wireless workstations.

Description: Privileges and access authorizations are configured within the Authentication and Authorization Service for internal wireless users and enforced within the wireless workstations. These privileges and access authorizations do not allow for internal wireless users to configure wireless networking capabilities on their wireless workstations.

 S
AC-18 Wireless Access AC-18-5 The organization confines wireless communications to organization-controlled boundaries.

Implementation Point(s): Wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The internal wireless user zone RF medium is confined to organization-controlled boundaries.

 S
AC-19 Access Control for Mobile Devices NA This security control and its technology-related control elements are not applicable to this business use case since wireless workstations are utilized as opposed to mobile devices. -
AC-21 User-Based Collaboration and Information Sharing AC-21-B The organization employs [Assignment: list of organization-defined information sharing circumstances and automated mechanisms or manual processes required] to assist users in making information sharing/collaboration decisions.

Implementation Point(s): Authentication and Authorization Service and Information Management Service

Description: The [Assignment: list of organization-defined information sharing circumstances and automated mechanisms or manual processes required] are implemented to assist users in making information sharing/collaboration decisions using information maintained within the Information Management Service with security attributes assigned by the Authentication and Authorization Service.

 C
AC-21 User-Based Collaboration and Information Sharing AC-21-1 The information system employs automated mechanisms to enable authorized users to make information-sharing decisions based on access authorizations of sharing partners and access restrictions on information to be shared.

Implementation Point(s): NA

Description: Information-sharing with non-organizational partners is not applicable to the business use case.

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AU-3 Content of Audit Records AU-3-A The information system produces audit records that contain sufficient information to, at a minimum, establish what type of event occurred, when (date and time) the event occurred, where the event occurred, the source of the event, the outcome (success or failure) of the event, and the identity of any user/subject associated with the event.

Implementation Point(s): Audit Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The auditing functionality of the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter supports reporting to the Audit Service of records that contain sufficient information to establish: what type of event occurred, when (date and time) the event occurred, where the event occurred, the source of the event, the outcome (success or failure) of the event, and the identity of any user/subject associated with the event. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Audit Service and audit functionality of the black wireless components.

 S
AU-3 Content of Audit Records AU-3-1 The information system includes [Assignment: organization-defined additional, more detailed information] in the audit records for audit events identified by type, location, or subject.

Implementation Point(s): Audit Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The auditing functionality of the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter supports the ability to configure [Assignment: organization-defined additional, more detailed information] for events reported to the Audit Service. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Audit Service and audit functionality of the black wireless components.

 S
AU-3 Content of Audit Records AU-3-2 The organization centrally manages the content of audit records generated by [Assignment: organization-defined information system components].

Implementation Point(s): Audit Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The auditing functionality of the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter supports ability to send audit records to the Audit Service. The Audit Service maintains a central repository for all audit records. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Audit Service and audit functionality of the black wireless components.

 S
AU-4 Audit Storage Capacity AU-4-A The organization allocates audit record storage capacity and configures auditing to reduce the likelihood of such capacity being exceeded.

Implementation Point(s): Audit Service and Information Management Service.

Description: The Audit Service is allocated record storage capacity maintained by the Information Management Service. Auditing is configured to reduce the likelihood of exceeding the record storage capacity.

 C
AU-5 Response to Audit Processing Failures AU-5-A The information system alerts designated organizational officials in the event of an audit processing failure.

Implementation Point(s): Audit Service

Description: The Audit Service alerts appropriate organizational officials in the event of an audit processing failure.

 C
AU-5 Response to Audit Processing Failures AU-5-B The information system takes the following additional actions: [Assignment: organization-defined actions to be taken (e.g., shut down information system, overwrite oldest audit records, stop generating audit records)].

Implementation Point(s): Access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The auditing functionality of the access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter support the ability to perform [Assignment: organization-defined actions to be taken (e.g., shut down information system, overwrite oldest audit records, stop generating audit records)] in the event of an audit processing failure within the component. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the audit functionality of the black wireless components.

 S
AU-5 Response to Audit Processing Failures AU-5-1 The information system provides a warning when allocated audit record storage volume reaches [Assignment: organization-defined percentage] of maximum audit record storage capacity.

Implementation Point(s): Audit Service and Information Management Service.

Description: The Audit Service provides a warning when allocated audit record storage volume within the Information Management Service reaches [Assignment: organization-defined percentage] of maximum audit record storage capacity.

 C
AU-5 Response to Audit Processing Failures AU-5-2 The information system provides a real-time alert when the following audit failure events occur: [Assignment: organization-defined audit failure events requiring real-time alerts].

Implementation Point(s): Audit Service

Description: The Audit Service provides a real-time alert when the [Assignment: organization-defined audit failure events requiring real-time alert] audit failure events occur.

 C
AU-5 Response to Audit Processing Failures AU-5-3 The information system enforces configurable traffic volume thresholds representing auditing capacity for network traffic and [Selection: rejects or delays] network traffic above those thresholds.

Implementation Point(s): Network Service

Description: The Network Service’s routers support the assignment of traffic volume thresholds representing auditing capacity for network traffic and [Selection: rejects or delays] network traffic above those thresholds.

 C
AU-5 Response to Audit Processing Failures AU-5-4 The information system invokes a system shutdown in the event of an audit failure, unless an alternative audit capability exists.

Implementation Point(s): Wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The auditing functionality of the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter supports the ability to shutdown the component if an audit failure occurs, unless an alternative audit capability exists. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the audit functionality of the black wireless components.

 S
AU-6 Audit Review, Analysis, and Reporting AU-6-3 The organization analyzes and correlates audit records across different repositories to gain organization-wide situational awareness.

Implementation Point(s): Audit Service, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The auditing functionality of access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components support the ability to transmit audit records to the Audit Service. The Audit Service maintains a central repository and management point for all audit records to gain organization-wide situational awareness.

 S
AU-6 Audit Review, Analysis, and Reporting AU-6-4 The information system centralizes the review and analysis of audit records from multiple components within the system.

Implementation Point(s): Audit Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The auditing functionality of the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter supports ability to send audit records to the Audit Service. The Audit Service includes a central repository for all audit records. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Audit Service and audit functionality of the black wireless components.

 S
AU-6 Audit Review, Analysis, and Reporting AU-6-5 The organization integrates analysis of audit records with analysis of vulnerability scanning information, performance data, and network monitoring information to further enhance the ability to identify inappropriate or unusual activity.

Implementation Point(s): Audit Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The auditing functionality of the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter supports ability to send audit records to the Audit Service. The Audit Service includes a central repository for all audit records. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Audit Service and audit functionality of the black wireless components.

 S
AU-7 Audit Reduction and Report Generation AU-7-A The information system provides an audit reduction and report generation capability.

Implementation Point(s): Audit Service

Description: The Audit Service supports an audit reduction and report generation capability.

 C
AU-7 Audit Reduction and Report Generation AU-7-1 The information system provides the capability to automatically process audit records for events of interest based on selectable event criteria.

Implementation Point(s): Audit Service

Description: The Audit Service supports functionality to automatically process audit records for events of interest based upon selectable, event criteria.

 C
AU-8 Time Stamps AU-8-A The information system uses internal system clocks to generate time stamps for audit records.

Implementation Point(s): Network Service, Audit Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The auditing functionality of the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter supports ability to generate time stamps for audit records sent to the Audit Service. Each component also supports the ability to synchronize their component clocks with a centralized Time server functionality supported by the Network Service. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Audit Service, Network Service and audit functionality of the black wireless components.

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AU-8 Time Stamps AU-8-1 The information system synchronizes internal information system clocks [Assignment: organization-defined frequency] with [Assignment: organization-defined authoritative time source].

Implementation Point(s): Network Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter support the ability to synchronize their component clocks with a centralized Time server functionality supported by the Network Service. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Audit Service, Network Service and the system time functionality of the black wireless components.

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AU-9 Protection of Audit Information AU-9-A The information system protects audit information and audit tools from unauthorized access, modification, and deletion.

Implementation Point(s): Authentication and Authorization Service, Audit Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Access authorizations to audit information and tools within wireless components, wireless workstations and Audit Service are configured within the Authentication and Authorization Service and enforced by the Audit Service. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authorization Service and Audit Service and the access control functionality of the black wireless components.

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AU-9 Protection of Audit Information AU-9-1 The information system produces audit records on hardware-enforced, write-once media.

Implementation Point(s): Audit Service

Description: The Audit Service supports the ability to produce audit records on hardware-enforced, write-once media.

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AU-9 Protection of Audit Information AU-9-2 The information system backs up audit records [Assignment: organization-defined frequency] onto a different system or media than the system being audited.

Implementation Point(s): Backup and Recovery Service and Audit Service.

Description: The Backup and Recovery Service backs up audit records produced by the Audit Service, [Assignment: organization-defined frequency] onto a different system or media than the system being audited.

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AU-9 Protection of Audit Information AU-9-3 The information system uses cryptographic mechanisms to protect the integrity of audit information and audit tools.

Implementation Point(s): Audit Service and Information Management Service.

Description: The Audit Service uses cryptographic mechanisms to protect the integrity of audit information stored and maintained by the Information Management Service.

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AU-9 Protection of Audit Information AU-9-4 The organization: (a) Authorizes access to management of audit functionality to only a limited subset of privileged users; and (b) Protects the audit records of non-local accesses to privileged accounts and the execution of privileged functions.

Implementation Point(s): Authentication and Authorization Service, Audit Service, Information Management Service access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Access authorizations to audit information stored by the Audit Service, within the Information Management Service, and audit functionality within the access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components are configured within the Authentication and Authorization Service to ensure that access to management of audit functionality to only a limited subset of privileged users; and (b) protects the audit records of non-local accesses to privileged accounts and the execution of privileged functions.

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AU-10 Non-Repudiation AU-10-A The information system protects against an individual falsely denying having performed a particular action.

Implementation Point(s): Audit Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The auditing functionality of the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter supports the ability to send records to the Audit Service identifying user actions. For black wireless components, the security control requirement is implemented within the black network Audit Service and the audit functionality of the black wireless components.

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AU-10 Non-Repudiation AU-10-1 The information system associates the identity of the information producer with the information.

Implementation Point(s): Wireless workstations

Description: Non repudiation functionality is supported on the wireless workstations for any information created, processed or stored by the internal wireless user on the wireless workstation.

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AU-10 Non-Repudiation AU-10-2 The information system validates the binding of the information producer’s identity to the information.

Implementation Point(s): Wireless workstations

Description: Non repudiation functionality is supported on the wireless workstations for any information created, processed or stored by the internal wireless user on the wireless workstation.

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AU-10 Non-Repudiation AU-10-3 The information system maintains reviewer/releaser identity and credentials within the established chain of custody for all information reviewed or released.

Implementation Point(s): Wireless workstations

Description: Non repudiation functionality is supported on the wireless workstations for any information created, processed or stored by the internal wireless user on the wireless workstation.

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AU-10 Non-Repudiation AU-10-4 The information system validates the binding of the reviewer’s identity to the information at the transfer/release point prior to release/transfer from one security domain to another security domain.

Implementation Point(s): Wireless workstations

Description: Non repudiation functionality is supported on the wireless workstations for any information created, processed or stored by the internal wireless user on the wireless workstation.

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AU-10 Non-Repudiation AU-10-5 The organization employs cryptography compliant with the requirements of control SC-13 to implement digital signatures.

Implementation Point(s): Wireless workstations

Description: Non repudiation functionality supported on the wireless workstations employs cryptography compliant with the requirements of control SC-13 to implement digital signatures.

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AU-12 Audit Generation AU-12-A The information system provides audit record generation capability for the list of auditable events defined in AU-2 at [Assignment: organization-defined information system components].

Implementation Point(s): Audit Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The auditing functionality of the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter support reporting of audit records of auditable events defined in AU-2 at [Assignment: organization-defined information system components] to the Audit Service. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Audit Service and the audit functionality of the black wireless components.

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AU-12 Audit Generation AU-12-B The information system allows designated organizational personnel to select which auditable events are to be audited by specific components of the system.

Implementation Point(s): Authentication and Authorization Service, Audit Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The auditing functionality of the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter is configurable by the wireless component administrators in terms of the events to be audited and reported to the Audit Service. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Audit Service and the audit functionality of the black wireless components.

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AU-12 Audit Generation AU-12-C The information system generates audit records for the list of audited events defined in AU-2 with the content as defined in AU-3.

Implementation Point(s): Audit Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The auditing functionality of the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter support reporting of audit records of auditable events defined in AU-2 with the content as defined in AU-3. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Audit Service and the audit functionality of the black wireless components.

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AU-12 Audit Generation AU-12-1 The information system compiles audit records from [Assignment: organization-defined information system components] into a system-wide (logical or physical) audit trail that is time- correlated to within [Assignment: organization-defined level of tolerance for relationship between time stamps of individual records in the audit trail].

Implementation Point(s): Audit Service, Network Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The auditing functionality of the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter support the ability to send audit records to the Audit Service. Each component synchronizes its system clock with the Time server functionality of the Network Service to ensure the audit records are time correlated within an [Assignment: Organization-defined level of tolerance for relationship between time stamps of individual records in the audit trail]. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Audit Service, Network Service and the audit functionality of the black wireless components.

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AU-12 Audit Generation AU-12-2 The information system produces a system-wide (logical or physical) audit trail composed of audit records in a standardized format.

Implementation Point(s): Audit Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The auditing functionality of the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter support the ability to send audit records to the Audit Service. The audit records produced by the external user and external administrator gateway and proxy components are in a standardized format or converted to this format by the Audit Service. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Audit Service and the audit functionality of the black wireless components.

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AU-14 Session Audit AU-14-A The information system provides the capability to capture/record and log all content related to a user session.

Implementation Point(s): IDS Service

Description: The IDS Service can be used to access the unencrypted content at the internal wireless user perimeter and log or capture the content to the Audit Service.

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AU-14 Session Audit AU-14-B The information system provides the capability to remotely view/hear all content related to an established user session in real time.

Implementation Point(s): IDS Service and Audit Service.

Description: The IDS Service can be used to access the unencrypted content at the internal wireless user perimeter and remotely view/hear all the content of a user session in real time.

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AU-14 Session Audit AU-14-1 The information system initiates session audits at system start-up.

Implementation Point(s): IDS Service and Audit Service.

Description: The IDS Service can be used to access the unencrypted content at the internal wireless user perimeter and log or capture the content to the Audit Service. The IDS Service has the ability to initiate the audit processes at system start-up.

 C
CM-5 Access Restrictions for Change CM-5-A The organization defines documents, approves, and enforces physical and logical access restrictions associated with changes to the information system.

Implementation Point(s): Authentication and Authorization Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Authorizations are assigned within the Authentication and Authorization Service for internal wireless users and wireless component administrators which define logical access restrictions associated with changes to the information system. These authorizations are enforced within the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service, and the access control functionality of the black wireless components.

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CM-5 Access Restrictions for Change CM-5-1 The organization employs automated mechanisms to enforce access restrictions and support auditing of the enforcement actions.

Implementation Point(s): Authentication and Authorization Service, Audit Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Authorizations are assigned within the Authentication and Authorization Service for internal wireless users and wireless component administrators and enforced within the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter. Auditing of the enforcement of these authorizations is also enforced by the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service, Audit Service and the audit functionality of the black wireless components.

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CM-5 Access Restrictions for Change CM-5-3 The information system prevents the installation of [Assignment: organization-defined critical software programs] that are not signed with a certificate that is recognized and approved by the organization.

Implementation Point(s): Wireless workstations

Description: The wireless workstations are configured such that their operating system prevents the installation of [Assignment: organization-defined critical software programs] that are not signed with a organizationally recognized and approved certificate.

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CM-5 Access Restrictions for Change CM-5-6 The organization limits privileges to change software resident within software libraries (including privileged programs).

Implementation Point(s): Authentication and Authorization Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Authorizations are assigned within the Authentication and Authorization Service for internal wireless users and wireless component administrators which define logical access restrictions associated with changes to software resident within software libraries (including privileged programs). These authorizations are enforced within the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service, and the access control functionality of the black wireless components.

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CM-5 Access Restrictions for Change CM-5-7 The information system automatically implements [Assignment: organization-defined safeguards and countermeasures] if security functions (or mechanisms) are changed inappropriately.

Implementation Point(s): Authentication and Authorization Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Authorizations are assigned within the Authentication and Authorization Service for internal wireless users and wireless component administrators which define logical access restrictions associated with changes to the information system. These authorizations are enforced within the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service, and the access control functionality of the black wireless components. The information system automatically implements [Assignment: organization-defined safeguards and countermeasures] if security functions (or mechanisms) are changed inappropriately.

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CM-6 Configuration Settings CM-6-B The organization implements the configuration settings.

Implementation Point(s): Wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter components are configured with the most restrictive mode mandatory configuration settings. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black wireless components.

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CM-6 Configuration Settings CM-6-1 The organization employs automated mechanisms to centrally manage, apply, and verify configuration settings.

Implementation Point(s): CMS, File Integrity Service, Audit Service wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The CMS supports the ability to provision and audit component configurations on wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter. The CMS supports the ability to periodically audit component configurations and to compare these audited configurations against approved configurations. The File Integrity Service supports the functionality to verify configuration settings in files on components that support the installation of a File Integrity Service agent. The CMS and File Integrity Service can report any detected unauthorized changes to the appropriate individual either directly (e.g., email notification) or indirectly by sending reports to the Audit Service. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network CMS, File Integrity Service, Authentication and Authorization Service, Audit Service and access control functionality of the black wireless components.

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CM-6 Configuration Settings CM-6-2 The organization employs automated mechanisms to respond to unauthorized changes to [Assignment: organization-defined configuration settings].

Implementation Point(s): CMS, File Integrity Service, Authentication and Authorization Service, Audit Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Authorizations for access to configuration settings are configured within the Authorization Service and enforced within the access control functionality of the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter. The access control functionality reports attempts for unauthorized access to the Audit Service. The CMS supports the ability to periodically audit component configurations and to compare these audited configurations against approved configurations in order to detect any unauthorized changes. The File Integrity Service supports the functionality to detect unauthorized modifications to files on components that support the installation of a File Integrity Service agent. Both the CMS and File Integrity Service report any detected unauthorized changes. The CMS and File Integrity Service can report any detected unauthorized changes to the appropriate individual either directly (e.g., email notification) or indirectly by sending reports to the Audit Service. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network CMS, File Integrity Service, Authentication and Authorization Service, Audit Service and access control functionality of the black wireless components.

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CM-6 Configuration Settings CM-6-3 The organization incorporates detection of unauthorized, security-relevant configuration changes into the organization’s incident response capability to ensure that such detected events are tracked, monitored, corrected, and available for historical purposes.

Implementation Point(s): CMS, File Integrity Service, Authentication and Authorization Service, Audit Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Authorizations for access to configuration settings are configured within the Authorization Service and enforced within the access control functionality of the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter. The access control functionality reports attempts for unauthorized access to the Audit Service. The CMS supports the ability to periodically audit component configurations and to compare these audited configurations against approved configurations in order to detect any unauthorized changes. The File Integrity Service supports the functionality to detect unauthorized modifications to files on components that support the installation of a File Integrity Service agent. Both the CMS and File Integrity Service report any detected unauthorized changes. The CMS and File Integrity Service can report any detected unauthorized changes to the appropriate individual either directly (e.g., email notification) or indirectly by sending reports to the Audit Service. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network CMS, File Integrity Service, Authentication and Authorization Service, Audit Service and access control functionality of the black wireless components.

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CM-7 Least Functionality CM-7-A The organization configures the information system to provide only essential capabilities and specifically prohibits or restricts the use of the following functions, ports, protocols, and/or services: [Assignment: organization-defined list of prohibited or restricted functions, ports, protocols, and/or services].

Implementation Point(s): Wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components are configured to provide only essential capabilities and prohibits and/or restricts the use of the following functions, ports, protocols, and/or services: [Assignment: organization-defined list of prohibited and/or restricted functions, ports, protocols, and/or services].

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CM-7 Least Functionality CM-7-2 The organization employs automated mechanisms to prevent program execution in accordance with [Selection (one or more): list of authorized software programs; list of unauthorized software programs; rules authorizing the terms and conditions of software program usage].

Implementation Point(s): Wireless workstations

Description: The wireless workstations are configured such that their operating system prevents program execution in accordance with [Selection (one or more): list of authorized software programs; list of unauthorized software programs; rules authorizing the terms and conditions of software program usage].

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CM-8 Information System Component Inventory CM-8-2 The organization employs automated mechanisms to help maintain an up-to-date, complete, accurate, and readily available inventory of information system components.

Implementation Point(s): CMS

Description: The CMS supports the ability to audit component configurations for automated inventory purposes. For Protected C and Classified wireless services deployments the security control requirement is also implemented in the black network CMS.

 C
CM-8 Information System Component Inventory CM-8-3 The organization: (a) Employs automated mechanisms [Assignment: organization-defined frequency] to detect the addition of unauthorized components/devices into the information system; and (b) Disables network access by such components/devices or notifies designated organizational officials.

Implementation Point(s): WIDS Service, wireless workstations, access points and perimeter wireless switches and black wireless components.

Description: Wireless workstations authenticate themselves to the thick access points or perimeter wireless switch (if thin access points are used) using cryptography. Only successfully authenticated wireless workstations connect to the internal wireless user zone. The WIDS Service together with its sensors (overlay mode WIDS) or access points (integrated mode WIDS) monitor for unauthorized wireless components. For Protected C and Classified wireless services deployments the WIDS Service is implemented within the black network using either black sensors (overlay mode WIDS) or black access points (integrated mode WIDS).

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CP-9 Information System Backup CP-9-A The organization conducts backups of user-level information contained in the information system [Assignment: organization-defined frequency consistent with recovery time and recovery point objectives].

Implementation Point(s): Backup and Recovery Service and Information Management Service.

Description: The Backup and Recovery Service conducts backups of user-level information maintained by the Information Management Service [Assignment: organization-defined frequency consistent with recovery time and recovery point objectives].

 C
CP-9 Information System Backup CP-9-B The organization conducts backups of system-level information contained in the information system [Assignment: organization-defined frequency consistent with recovery time and recovery point objectives].

Implementation Point(s): Backup and Recovery Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The Backup and Recovery Service accesses the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter to back up system-level information [Assignment: organization-defined frequency consistent with recovery time and recovery point objectives]. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Backup and Recovery Service and access control functionality of the black wireless components.

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CP-9 Information System Backup CP-9-C The organization conducts backups of information system documentation including security-related documentation [Assignment: organization-defined frequency consistent with recovery time and recovery point objectives].

Implementation Point(s): Backup and Recovery Service and Information Management Service.

Description: The Backup and Recovery Service conducts backups of information system documentation and these backups are maintained by the Information Management Service [Assignment: organization-defined frequency consistent with recovery time and recovery point objectives].

 C
CP-9 Information System Backup CP-9-6 The organization accomplishes information system backup by maintaining a redundant secondary system, not collocated, that can be activated without loss of information or disruption to the operation.

Implementation Point(s): All

Description: A fully redundant secondary information system is maintained to support continued information system availability in the event of failure to the primary information system.

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CP-10 Information System Recovery and Reconstitution CP-10-2 The information system implements transaction recovery for systems that are transaction-based.

Implementation Point(s): Information Management Service

Description: Support for transaction recovery is implemented in the databases maintained within the Information Management Service.

 C
CP-10 Information System Recovery and Reconstitution CP-10-5 The organization provides [Selection: real-time; near-real-time] [Assignment: organization-defined failover capability for the information system].

Implementation Point(s): Access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter are implemented in a manner that supports [Selection: real-time; near-real-time] [Assignment: organization-defined failover capability for the information system]. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black wireless components.

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IA-2 Identification and Authentication (Organizational Users) IA-2-A The information system uniquely identifies and authenticates organizational users (or processes acting on behalf of organizational users).

Implementation Point(s): Authentication and Authorization Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Accounts credentials are configured within the Authentication and Authorization Service for internal wireless users and wireless component administrators and enforced within the login functionality of the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service and login functionality of the black wireless components.

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IA-2 Identification and Authentication (Organizational Users) IA-2-1 The information system uses multifactor authentication for network access to privileged accounts.

Implementation Point(s): Authentication and Authorization Service, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Multifactor authentication is configured within the Authentication and Authorization Service for wireless component administrators and enforced within the network access login functionality of the access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service and login functionality of the black wireless components.

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IA-2 Identification and Authentication (Organizational Users) IA-2-2 The information system uses multifactor authentication for network access to non-privileged accounts.

Implementation Point(s): NA

Description: Internal wireless users do not log into the authentication gateway through network access connections.

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IA-2 Identification and Authentication (Organizational Users) IA-2-3 The information system uses multifactor authentication for local access to privileged accounts.

Implementation Point(s): Authentication and Authorization Service, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Multifactor authentication is configured within the Authentication and Authorization Service for wireless component administrators and enforced within the login functionality of the access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service and login functionality of the black wireless components.

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IA-2 Identification and Authentication (Organizational Users) IA-2-4 The information system uses multifactor authentication for local access to non-privileged accounts.

Implementation Point(s): Authentication and Authorization Service and wireless workstations.

Description: Multifactor authentication is configured within the Authentication and Authorization Service for internal wireless users and enforced within the login functionality of the wireless workstations.

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IA-2 Identification and Authentication (Organizational Users) IA-2-5 The organization: (a) Allows the use of group authenticators only when used in conjunction with an individual/unique authenticator; and (b) Requires individuals to be authenticated with an individual authenticator prior to using a group authenticator.

Implementation Point(s): Authentication and Authorization Service, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Group authenticator credentials are configured within the Authentication and Authorization Service for wireless component administrators and internal wireless users. The use of group authenticators is enforced within the login functionality of the access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter for wireless component administrators. The use of group authenticators is enforced within the login functionality of the wireless workstations for internal wireless users. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service and login functionality of the black wireless components for black wireless component administrators.

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IA-2 Identification and Authentication (Organizational Users) IA-2-6 The information system uses multifactor authentication for network access to privileged accounts where one of the factors is provided by a device separate from the information system being accessed.

Implementation Point(s): Authentication and Authorization Service, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Multifactor authentication is configured within the Authentication and Authorization Service for wireless component administrators and enforced within the network access login functionality of the access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter. One of the factors is provided by a device separate from the information system being accessed. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service and login functionality of the black wireless components.

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IA-2 Identification and Authentication (Organizational Users) IA-2-7 The information system uses multifactor authentication for network access to non-privileged accounts where one of the factors is provided by a device separate from the information system being accessed.

Implementation Point(s): NA

Description: Internal wireless users do not log into the authentication gateway through network access connections.

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IA-2 Identification and Authentication (Organizational Users) IA-2-8 The information system uses [Assignment: organization-defined replay-resistant authentication mechanisms] for network access to privileged accounts.

Implementation Point(s): Authentication and Authorization Service, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The authentication method configured within the Authentication and Authorization Service for wireless component administrators and enforced within the network access login functionality of the access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter, uses [Assignment: organization-defined replay-resistant authentication mechanisms]. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service and login functionality of the black wireless components.

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IA-2 Identification and Authentication (Organizational Users) IA-2-9 The information system uses [Assignment: organization-defined replay-resistant authentication mechanisms] for network access to non-privileged accounts.

Implementation Point(s): NA

Description: Internal wireless users do not log into the authentication gateway through network access connections.

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IA-2 Identification and Authentication (Organizational Users) IA-2-100 The information system uses multifactor authentication for remote access to privileged accounts.

Implementation Point(s): NA

Description: Wireless component administrators do not use remote access connections to administer the wireless components.

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IA-3 Device Identification and Authentication IA-3-A The information system uniquely identifies and authenticates [Assignment: organization-defined list of specific and/or types of devices] before establishing a connection.

Implementation Point(s): Authentication and Authorization Service and wireless workstations.

Description: Wireless workstations must successfully complete 802.11 associations through 802.1X port-based authentication supported by the Authentication and Authorization Service.

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IA-3 Device Identification and Authentication IA-3-1 The information system authenticates devices before establishing remote and wireless network connections using bidirectional authentication between devices that is cryptographically based.

Implementation Point(s): Authentication and Authorization Service, wireless workstations, access points and perimeter wireless switches.

Description: Wireless workstations authenticate themselves to the thick access points or perimeter wireless switch (if thin access points are used) using cryptography. The authentication is supported by the 802.1X port-based authentication functionality of the Authentication and Authorization Service.

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IA-3 Device Identification and Authentication IA-3-2 The information system authenticates devices before establishing network connections using bidirectional authentication between devices that is cryptographically based.

Implementation Point(s): Authentication and Authorization Service, wireless workstations, access points and perimeter wireless switches.

Description: Wireless workstations bi-directionally authenticate themselves to the thick access points or perimeter wireless switch (if thin access points are used) using cryptography. The authentication is supported by the 802.1X port-based authentication functionality of the Authentication and Authorization Service.

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IA-4 Identifier Management IA-4-5 The information system dynamically manages identifiers, attributes, and associated access authorizations.

Implementation Point(s): NA

Description: The use of dynamic management of identifiers, attributes, and associated access authorizations is not applicable to the business use case.

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IA-5 Authenticator Management IA-5-1 The information system, for password-based authentication: (a) Enforces minimum password complexity of [Assignment: organization-defined requirements for case sensitivity, number of characters, mix of upper-case letters, lower-case letters, numbers, and special characters, including minimum requirements for each type]; (b) Enforces at least a [Assignment: organization-defined number of changed characters] when new passwords are created; (c) Encrypts passwords in storage and in transmission; (d) Enforces password minimum and maximum lifetime restrictions of [Assignment: organization-defined numbers for lifetime minimum, lifetime maximum]; and (e) Prohibits password reuse for [Assignment: organization-defined number] generations.

Implementation Point(s): Authentication and Authorization Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Internal wireless user accounts and wireless component administrator accounts are configured within the Authentication and Authorization Service to enforce (a) minimum password complexity of [Assignment: organization-defined requirements for case sensitivity, number of characters, mix of upper-case letters, lower-case letters, numbers, and special characters, including minimum requirements for each type]; (b) at least a [Assignment: organization-defined number of changed characters] when new passwords are created; (c) Encrypts passwords in storage and in transmission; (d) password minimum and maximum lifetime restrictions of [Assignment: organization-defined numbers for lifetime minimum, lifetime maximum]; and (e) prevention of password reuse for [Assignment: organization-defined number] generations. Login using the password policy is supported by the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service and login functionality of the black wireless components.

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IA-5 Authenticator Management IA-5-2 The information system, for PKI-based authentication: (a) Validates certificates by constructing a certification path with status information to an accepted trust anchor; (b) Enforces authorized access to the corresponding private key; and (c) Maps the authenticated identity to the user account.

Implementation Point(s): Authentication and Authorization Service, PKI Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: PKI-based authentication is configured within the Authentication and Authorization Service for internal wireless users and wireless component administrators and supported by the PKI Service to (a) validate certificates by constructing a certification path with status information to an accepted trust anchor; (b) enforce authorized access to the corresponding private key; and (c) map the authenticated identity to the user account. PKI-based authentication is supported by the login functionality of the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service, PKI Service and login functionality of the black wireless components.

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IA-6 Authenticator Feedback IA-6-A The information system obscures feedback of authentication information during the authentication process to protect the information from possible exploitation/use by unauthorized individuals.

Implementation Point(s): Wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The login functionality of the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter obscures feedback of authentication information during the login process. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the login functionality of the black wireless components.

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IA-7 Cryptographic Module Authentication IA-7-A The information system uses mechanisms for authentication to a cryptographic module that meet the requirements of applicable CSEC guidance for such authentication.

Implementation Point(s): Authentication and Authorization Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Authentication methods are configured within the Authentication and Authorization Service for internal wireless users and wireless component administrators and enforced within the login functionality of the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter. The authentication methods meet the requirements of applicable CSEC guidance. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service and login functionality of the black wireless components.

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IA-8 Identification and Authentication(Non- Organizational Users) NA This security control and its technology-related control elements are not applicable to this business use case since wireless access for non-departmental users is not supported. -
MA-4 Non-Local Maintenance NA This security control and its technology-related control elements are not applicable to the business use case which does not provide support for non-local maintenance and diagnostic activities. -
SC-2 Application Partitioning SC-2-A The information system separates user functionality (including user interface services) from information system management functionality.

Implementation Point(s): Network Service

Description: The Network Service includes support for a management sub-zone to separate user services from management services.

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SC-2 Application Partitioning SC-2-1 The information system prevents the presentation of information system management-related functionality at an interface for general (i.e., non-privileged) users.

Implementation Point(s): Network Service

Description: The Network Service includes support for a management sub-zone and internal wireless user zone to separate system management-related functionality from non-privileged (e.g., external user) functionality.

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SC-3 Security Function Isolation SC-3-A The information system isolates security functions from non-security functions.

Implementation Point(s): Wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black wireless components.

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SC-3 Security Function Isolation SC-3-1 The information system implements underlying hardware separation mechanisms to facilitate security function isolation.

Implementation Point(s): Wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and the black wireless components.

Description: Wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter each employs underlying hardware separation mechanisms to facilitate security function isolation. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black wireless components.

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SC-3 Security Function Isolation SC-3-2 The information system isolates security functions enforcing access and information flow control from both non-security functions and from other security functions.

Implementation Point(s): Authentication and Authorization Service and internal wireless user perimeter.

Description: Access and information flow control security functions are implemented within the Authentication and Authorization Service and Internal wireless user perimeter which are separate from the non-security functions performed in the information system.

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SC-3 Security Function Isolation SC-3-3 The organization implements an information system isolation boundary to minimize the number of non-security functions included within the boundary containing security functions.

Implementation Point(s): Wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter each minimizes the number of non-security functions included within the isolation boundary containing security functions. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black wireless components.

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SC-3 Security Function Isolation SC-3-4 The organization implements security functions as largely independent modules that avoid unnecessary interactions between modules.

Implementation Point(s): Wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter each implement security functions as largely independent modules that avoid unnecessary interactions between modules. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black wireless components.

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SC-3 Security Function Isolation SC-3-5 The organization implements security functions as a layered structure minimizing interactions between layers of the design and avoiding any dependence by lower layers on the functionality or correctness of higher layers.

Implementation Point(s): Wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter each implement security functions as a layered structure minimizing interactions between layers of the design and avoiding any dependence by lower layers on the functionality or correctness of higher layers. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black wireless components.

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SC-4 Information in shared Resources SC-4-A The information system prevents unauthorized and unintended information transfer via shared system resources.

Implementation Point(s): Authentication and Authorization Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Authorizations are assigned within the Authentication and Authorization Service for internal wireless users and wireless component administrators that define what information the users and administrators are authorized to access. These authorizations are enforced within the access control functionality of the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter and are designed to prevent unauthorized and unintended information transfer via shared system resources. For Protected C and Classified wireless services deployments the security control requirement is also implemented within the black network Authentication and Authorization Service and access control functionality of the black wireless components.

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SC-4 Information in shared Resources SC-4-1 The information system does not share resources that are used to interface with systems operating at different security levels.

Implementation Point(s): NA

Description: The interfacing of information systems with different security levels is not applicable to the business use case.

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SC-5 Denial of Service Protection SC-5-A The information system protects against or limits the effects of the following types of denial of service attacks: [Assignment: organization-defined list of types of denial of service attacks or reference to source for current list].

Implementation Point(s): WIDS Service, sensors, access points and IDS Service.

Description: The WIDS Service together with its sensors (overlay mode WIDS) or access points (integrated mode WIDS) monitor for denial of service attacks within the internal wireless user zone while the IDS Service monitors for denial of service attacks within the rest of the departmental network. For Protected C and Classified wireless services deployments the WIDS Service is implemented within the black network using either black sensors (overlay mode WIDS) or black access points (integrated mode WIDS).

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SC-5 Denial of Service Protection SC-5-1 The information system restricts the ability of users to launch denial of service attacks against other information systems or networks.

Implementation Point(s): WIDS Service, sensors, access points and IDS Service.

Description: The WIDS Service together with its sensors (overlay mode WIDS) or access points (integrated mode WIDS) monitor for denial of service attacks within the internal wireless user zone while the IDS Service monitors for denial of service attacks within the rest of the departmental network. For Protected C and Classified wireless services deployments the WIDS Service is implemented within the black network using either black sensors (overlay mode WIDS) or black access points (integrated mode WIDS).

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SC-5 Denial of Service Protection SC-5-2 The information system manages excess capacity, bandwidth, or other redundancy to limit the effects of information flooding types of denial of service attacks.

Implementation Point(s): Network Service

Description: The Network Service’s routers support the assignment of traffic volume thresholds for network traffic types to limit the effects of information flooding types of denial of service attacks.

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SC-6 Resource Priority SC-6-A The information system limits the use of resources by priority.

Implementation Point(s): Network Service

Description: The Network Service’s routers support the assignment of traffic volume thresholds for network traffic types to limit use of resources by priority through traffic types.

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SC-7 Boundary Protection SC-7-A The information system monitors and controls communications at the external boundary of the system and at key internal boundaries within the system.

Implementation Point(s): Internal wireless user perimeter

Description: The perimeters used to implement departmental network zones (including the internal wireless user perimeter) monitors and controls communications at the internal wireless user zone boundary to the departmental network. Security of communications with external networks is not within the scope of the business use case.

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SC-7 Boundary Protection SC-7-B The information system connects to external networks or information systems only through managed interfaces consisting of boundary protection devices arranged in accordance with a organizational security architecture.

Implementation Point(s): NA

Description: Security of communications with external networks is not within the scope of the business use case.

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SC-7 Boundary Protection SC-7-1 The organization physically allocates publicly accessible information system components to separate sub-networks with separate physical network interfaces.

Implementation Point(s): NA

Description: Security of publicly accessible information system components is not within the scope of the business use case.

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SC-7 Boundary Protection SC-7-2 The information system prevents public access into the organization’s internal networks except as appropriately mediated by managed interfaces employing boundary protection devices.

Implementation Point(s): NA

Description: Security of public access to the departmental network is not within the scope of the business use case.

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SC-7 Boundary Protection SC-7-3 The organization limits the number of access points to the information system to allow for more comprehensive monitoring of inbound and outbound communications and network traffic.

Implementation Point(s): Internal wireless user perimeter

Description: Access points to the departmental network for internal wireless users are limited to the internal wireless user perimeter.

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SC-7 Boundary Protection SC-7-4 The organization: (a) Implements a managed interface for each external telecommunication service; (b) Establishes a traffic flow policy for each managed interface; (c) Employs security controls as needed to protect the confidentiality and integrity of the information being transmitted; (d) Documents each exception to the traffic flow policy with a supporting mission/business need and duration of that need; (e) Reviews exceptions to the traffic flow policy [Assignment: organization-defined frequency]; and (f) Removes traffic flow policy exceptions that are no longer supported by an explicit mission/business need.

Implementation Point(s): NA

Description: Security of communications with external networks is not within the scope of the business use case.

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SC-7 Boundary Protection SC-7-5 The information system at managed interfaces, denies network traffic by default and allows network traffic by exception (e.g., deny all, permit by exception).

Implementation Point(s): Internal wireless user perimeter

Description: The internal wireless user perimeter is configured to deny network traffic by default and allow network traffic by exception (e.g., deny all, permit by exception).

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SC-7 Boundary Protection SC-7-6 The organization prevents the unauthorized release of information outside of the information system boundary or any unauthorized communication through the information system boundary when there is an operational failure of the boundary protection mechanisms.

Implementation Point(s): Internal wireless user perimeter

Description: The internal wireless user perimeter fails in the open state to prevent the unauthorized release of information outside of the information system boundary or any unauthorized communication through the information system boundary when there is an operational failure of the perimeter.

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SC-7 Boundary Protection SC-7-7 The information system prevents remote devices that have established a non-remote connection with the system from communicating outside of that communications path with resources in external networks.

Implementation Point(s): NA

Description: Use of remote devices is not applicable to the business use case.

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SC-7 Boundary Protection SC-7-8 The information system routes [Assignment: organization-defined internal communications traffic] to [Assignment: organization-defined external networks] through authenticated proxy servers within the managed interfaces of boundary protection devices.

Implementation Point(s): NA

Description: Security of communications with external networks is not within the scope of the business use case.

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SC-7 Boundary Protection SC-7-9 The information system, at managed interfaces, denies network traffic and audits internal users (or malicious code) posing a threat to external information systems.

Implementation Point(s): Network Service and Audit Service.

Description: The Network Service perimeters used to implement departmental network zones (including the external user and external administrator gateway components) denies unauthorized communications and sends audit records of these communications (associated with internal users (or malicious code) posing a threat to external information systems) to the Audit Service.

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SC-7 Boundary Protection SC-7-10 The organization prevents the unauthorized exfiltration of information across managed interfaces.

Implementation Point(s): Internal wireless user perimeter

Description: The perimeters used to implement departmental network zones (including the Internal wireless user perimeter) prevent the unauthorized exfiltration of information.

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SC-7 Boundary Protection SC-7-11 The information system checks incoming communications to ensure that the communications are coming from an authorized source and routed to an authorized destination.

Implementation Point(s): Internal wireless user perimeter

Description: The perimeters used to implement departmental network zones (including the Internal wireless user perimeter) check incoming communications to ensure that the communications are coming from an authorized source and routed to an authorized destination.

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SC-7 Boundary Protection SC-7-12 The information system implements host-based boundary protection mechanisms for servers, workstations, and mobile devices.

Implementation Point(s): Access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Host-based boundary protection mechanisms are implemented on the Access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter. For Protected C and Classified wireless services deployments the security control requirement is also implemented on the black wireless components.

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SC-7 Boundary Protection SC-7-13 The organization isolates [Assignment: organization defined key information security tools, mechanisms, and support components] from other internal information system components via physically separate subnets with managed interfaces to other portions of the system.

Implementation Point(s): Network Service

Description: The Network Service implements zones and sub-zones used to segregate components within the departmental network based on their security policies.

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SC-7 Boundary Protection SC-7-15 The information system routes all networked, privileged accesses through a dedicated, managed interface for purposes of access control and auditing.

Implementation Point(s): Access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter each support a separate management network interface that connects to the management sub-zone. The management network interfaces are used for wireless component administrator access to the components and support administrative access control and auditing. For Protected C and Classified wireless services deployments the security control requirement is also implemented on the black wireless components.

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SC-7 Boundary Protection SC-7-16 The information system prevents discovery of specific system components (or devices) composing a managed interface.

Implementation Point(s): Access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components each support a separate management network interface that connects to the management sub-zone. These management network interfaces do not respond to network discovery tools or techniques.

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SC-7 Boundary Protection SC-7-17 The organization employs automated mechanisms to enforce strict adherence to protocol format.

Implementation Point(s): Network Service

Description: The Network Service implements zones and sub-zones used to segregate components within the departmental network based on their security policies. The perimeter components that separate zones and sub-zones enforce strict adherence to protocol format and deny communications that don’t comply.

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SC-7 Boundary Protection SC-7-18 The information system fails securely in the event of an operational failure of a boundary protection device.

Implementation Point(s): Network Service

Description: The Network Service implements zones and sub-zones used to segregate components within the departmental network based on their security policies. The perimeter components that separate zones and sub-zones fail in a secure manner by denying all communication in their failed state.

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SC-8 Transmission Integrity SC-8-A The information system protects the integrity of transmitted information.

Implementation Point(s): Wireless workstations, access points, perimeter wireless switch, user and perimeter INEs and black wireless components.

Description: Encrypted communications are supported between the wireless workstations and the thick access points or to the perimeter wireless switch if thin access points are used. The encryption protects the integrity and confidentiality of the information transmitted in the internal wireless user zone. For Protected C and Classified wireless service deployments the transmitted information is also encrypted by the user and perimeter INEs.

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SC-8 Transmission Integrity SC-8-1 The organization employs cryptographic mechanisms to recognize changes to information during transmission unless otherwise protected by alternative physical measures. The cryptography must be compliant with the requirements of control SC-13.

Implementation Point(s): Wireless workstations, access points, perimeter wireless switch, user and perimeter INEs and black wireless components.

Description: Encrypted communications are supported between the wireless workstations and the thick access points or to the perimeter wireless switch if thin access points are used. The encryption protects the integrity and confidentiality of the information transmitted in the internal wireless user zone. For Protected C and Classified wireless service deployments the transmitted information is also encrypted by the user and perimeter INEs. The cryptography used is compliant with the requirements of control SC-13.

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SC-8 Transmission Integrity SC-8-2 The information system maintains the integrity of information during aggregation, packaging, and transformation in preparation for transmission.

Implementation Point(s): Wireless workstations, access points, perimeter wireless switch, user and perimeter INEs and black wireless components.

Description: Encrypted communications are supported between the wireless workstations and the thick access points or to the perimeter wireless switch if thin access points are used. The encryption protects the integrity and confidentiality of the information transmitted in the internal wireless user zone. For Protected C and Classified wireless service deployments the transmitted information is also encrypted by the user and perimeter INEs.

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SC-9 Transmission Confidentiality SC-9-A The information system protects the confidentiality of transmitted information.

Implementation Point(s): Wireless workstations, access points, perimeter wireless switch, user and perimeter INEs and black wireless components.

Description: Encrypted communications are supported between the wireless workstations and the thick access points or to the perimeter wireless switch if thin access points are used. The encryption protects the integrity and confidentiality of the information transmitted in the internal wireless user zone. For Protected C and Classified wireless service deployments the transmitted information is also encrypted by the user and perimeter INEs.

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SC-9 Transmission Confidentiality SC-9-1 The organization employs cryptographic mechanisms to prevent unauthorized disclosure of information during transmission unless otherwise protected by [Assignment: organization-defined alternative physical measures]. The cryptography must be compliant with the requirements of control SC-13.

Implementation Point(s): Wireless workstations, access points, perimeter wireless switch, user and perimeter INEs and black wireless components.

Description: Encrypted communications are supported between the wireless workstations and the thick access points or to the perimeter wireless switch if thin access points are used. The encryption protects the integrity and confidentiality of the information transmitted in the internal wireless user zone. For Protected C and Classified wireless service deployments the transmitted information is also encrypted by the user and perimeter INEs. The cryptography used is compliant with the requirements of control SC-13.

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SC-9 Transmission Confidentiality SC-9-2 The information system maintains the confidentiality of information during aggregation, packaging, and transformation in preparation for transmission.

Implementation Point(s): Wireless workstations, access points and perimeter wireless switch.

Description: Encrypted communications are supported between the wireless workstations and the thick access points or to the perimeter wireless switch if thin access points are used. The encryption protects the integrity and confidentiality of the information transmitted in the internal wireless user zone. The wireless workstations, access points and perimeter wireless switch maintain the confidentiality of information during aggregation, packaging, and transformation in preparation for transmission.

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SC-9 Transmission Confidentiality SC-9-100 The organization employs traffic flow security to protect communications against traffic flow analysis

Implementation Point(s): Wireless workstations, access points and perimeter wireless switch.

Description: Encrypted communications are supported between the wireless workstations and the thick access points or to the perimeter wireless switch if thin access points are used. The encryption protects the internal wireless user zone communications against traffic flow analysis.

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SC-10 Network Disconnect SC-10-A The information system terminates the network connection associated with a communications session at the end of the session or after [Assignment: organization-defined time period] of inactivity.

Implementation Point(s): Internal wireless user perimeter

Description: The internal wireless user perimeter is configured to terminate network connections at the end of a session or after [Assignment: organization-defined time period] of inactivity.

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SC-11 Trusted Path SC-11-A The information system establishes a trusted communications path between the user and the following security functions of the system: [Assignment: organization-defined security functions to include at a minimum, information system authentication and re-authentication].

Implementation Point(s): Authentication and Authorization Service, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter and black wireless components.

Description: Wireless component administrators access the access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter using their administrator workstations located within the management sub-zone implemented by the Network Service. The information flow policies enforced within the restricted zone and operations zone ensure that administration of the wireless components can only be performed from internal administrator workstations located in the management sub-zone. The path between the internal administrators and the wireless components is therefore trusted. For Protected C and Classified wireless service deployments this security control requirement is implemented for black wireless components using a black management sub-zone.

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SC-12 Cryptographic Key Establishment and Management SC-12-A The organization establishes and manages cryptographic keys for required cryptography employed within the information system.

Implementation Point(s): PKI Service

Description: The PKI Service establishes and manages cryptographic keys for required cryptography employed within the information system.

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SC-12 Cryptographic Key Establishment and Management SC-12-2 The organization produces, controls, and distributes symmetric cryptographic keys using CSEC-approved key management technology and processes.

Implementation Point(s): PKI Service

Description: The PKI Service produces, controls, and distributes symmetric cryptographic keys using CSEC-approved key management technology and processes.

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SC-12 Cryptographic Key Establishment and Management SC-12-3 The organization produces, controls, and distributes symmetric and asymmetric cryptographic keys using CSEC-approved key management technology and processes.

Implementation Point(s): PKI Service

Description: The PKI Service produces, controls, and distributes symmetric and asymmetric cryptographic keys using CSEC-approved key management technology and processes.

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SC-12 Cryptographic Key Establishment and Management SC-12-4 The organization produces, controls, and distributes asymmetric cryptographic keys using approved PKI Class 3 certificates or prepositioned keying material.

Implementation Point(s): PKI Service

Description: The PKI Service produces, controls, and distributes asymmetric cryptographic keys using approved PKI Class 3 certificates or prepositioned keying material.

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SC-12 Cryptographic Key Establishment and Management SC-12-5 The organization produces controls, and distributes asymmetric cryptographic keys using approved PKI Class 3 or Class 4 certificates and hardware security tokens that protect the user’s private key.

Implementation Point(s): PKI Service

Description: The PKI Service produces controls, and distributes asymmetric cryptographic keys using approved PKI Class 3 or Class 4 certificates and hardware security tokens that protect the user’s private key.

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SC-13 Use of Cryptography SC-13-A The information system implements cryptographic protections using cryptographic systems that comply with applicable GC legislation and TBS policies, directives and standards.

Implementation Point(s): Wireless workstations, access points, perimeter wireless switch, user and perimeter INEs and black wireless components.

Description: Encrypted communications are supported between the wireless workstations and the thick access points or to the perimeter wireless switch if thin access points are used. The encryption protects the integrity and confidentiality of the information transmitted in the internal wireless user zone. For Protected C and Classified wireless service deployments the transmitted information is also encrypted by the user and perimeter INEs. Encryption is implemented using CSEC-approved encryption mechanisms commensurate for the classification and sensitivity of the information and in accordance with applicable GC legislation and TBS policies, directives and standards.

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SC-13 Use of Cryptography SC-13-1 The organization employs, at a minimum, CMVP-validated cryptography to protect Unclassified data.

Implementation Point(s): Wireless workstations, access points and perimeter wireless switch.

Description: Encrypted communications are supported between the wireless workstations and the thick access points or to the perimeter wireless switch if thin access points are used. The encryption protects the integrity and confidentiality of the information transmitted in the internal wireless user zone. Encryption is implemented using at a minimum, CMVP-validated cryptography to protect Unclassified data.

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SC-13 Use of Cryptography SC-13-2 The organization employs CSEC-approved cryptography to protect Classified data.

Implementation Point(s): Wireless workstations, access points and perimeter wireless switch.

Description: For Protected C and Classified wireless service deployments encrypted communications are supported between the user and perimeter INEs. The encryption protects the integrity and confidentiality of the information transmitted in the internal wireless user zone. Encryption is implemented using CSEC-approved cryptography to protect Classified data.

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SC-13 Use of Cryptography SC-13-3 The organization employs, at a minimum, CMVP-validated cryptography to protect data when such data must be separated from individuals who have the necessary clearances yet lack the necessary access approvals.

Implementation Point(s): Wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter.

Description: The wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter use at a minimum, CMVP-validated cryptography to protect data when such data must be separated from individuals who have the necessary clearances yet lack the necessary access approvals.

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SC-13 Use of Cryptography SC-13-4 The organization employs [Selection: CMVP-validated; CSEC-approved] cryptography to implement digital signatures.

Implementation Point(s): Wireless workstations, access points, perimeter wireless switch, user and perimeter INEs and black wireless components.

Description: Encrypted communications are supported between the wireless workstations and the thick access points or to the perimeter wireless switch if thin access points are used. For Protected C and Classified wireless service deployments the transmitted information is also encrypted by the user and perimeter INEs. The encryption protects the integrity and confidentiality of the information transmitted in the internal wireless user zone. [Selection: CMVP-validated; CSEC-approved] cryptography is used by these components to implement digital signatures for the encrypted communications.

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SC-13 Use of Cryptography SC-13-100 The organization employs CMVP-validated cryptography to protect Protected A data in transmission.

Implementation Point(s): Wireless workstations, access points and perimeter wireless switch.

Description: Encrypted communications are supported between the wireless workstations and the thick access points or to the perimeter wireless switch if thin access points are used. The encryption protects the integrity and confidentiality of the information transmitted in the internal wireless user zone. Encryption is implemented using CMVP-validated cryptography to protect Protected A data in transmission.

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SC-13 Use of Cryptography SC-13-101 The organization employs CMVP-validated cryptography to protect Protected B data in transmission.

Implementation Point(s): Wireless workstations, access points and perimeter wireless switch.

Description: Encrypted communications are supported between the wireless workstations and the thick access points or to the perimeter wireless switch if thin access points are used. The encryption protects the integrity and confidentiality of the information transmitted in the internal wireless user zone. Encryption is implemented using CMVP-validated cryptography to protect Protected B data in transmission.

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SC-13 Use of Cryptography SC-13-102 The organization employs CSEC-approved cryptography to protect Protected C data in transmission.

Implementation Point(s): User and perimeter INEs.

Description: For Protected C and Classified wireless service deployments encrypted communications are supported between the user and perimeter INEs. The encryption protects the integrity and confidentiality of the information transmitted in the internal wireless user zone. Encryption is implemented using CSEC-approved cryptography to protect Protected C data in transmission.

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SC-13 Use of Cryptography SC-13-103 The organization employs [Selection: CMVP-validated; CSEC-approved] cryptography to protect Protected [selection: organizationally-defined data] at rest.

Implementation Point(s): Wireless workstations

Description: The wireless workstations are configured with cryptographic mechanisms to protect the confidentiality and integrity of their Protected information at rest. The [Selection: CMVP-validated; CSEC-approved] cryptography is used to protect Protected [selection: organizationally-defined data] at rest.

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SC-13 Use of Cryptography SC-13-104 The organization uses COMSEC equipment in accordance with CSEC ITSD-01 Directives for the Application of Communications Security in the Government of Canada.

Implementation Point(s): User and perimeter INEs.

Description: The user and perimeter INEs are used in accordance with CSEC ITSD-01 Directives for the Application of Communications Security in the Government of Canada.

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SC-14 Public Access Protections NA This security control and its technology-related control elements are not applicable to the business use case which does not involve the protection of integrity and availability of publicly available information and applications. -
SC-16 Transmission of Security Attributes NA This security control and its technology-related control elements are not applicable to the business use case since the exchange of information and their associated security attributes between separate information systems (i.e., the departmental network and some other information system) is not applicable to the business use case. -
SC-18 Mobile Code SC-18-C The organization authorizes, monitors, and controls the use of mobile code within the information system.

Implementation Point(s): MCDS and wireless workstations.

Description: The wireless workstations are configured with malicious code defence agents that operate under the policies defined within the MCDS to detect and inspect data for mobile code and to take the appropriate action.

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SC-18 Mobile Code SC-18-1 The information system implements detection and inspection mechanisms to identify unauthorized mobile code and takes corrective actions, when necessary.

Implementation Point(s): MCDS, wireless workstations and internal wireless user perimeter.

Description: The wireless workstations are configured with malicious code defence agents that operate under the policies defined within the MCDS to detect and inspect data for mobile code and to take the appropriate action. The internal wireless user perimeter monitors communications leaving and entering the internal wireless user zone to detect and inspect data for unauthorized mobile code and to take the appropriate action.

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SC-18 Mobile Code SC-18-3 The information system prevents the download and execution of prohibited mobile code.

Implementation Point(s): MCDS and wireless workstations.

Description: The wireless workstations are configured with malicious code defence agents that operate under the policies defined within the MCDS to detect and inspect data for unauthorized mobile code and to take the appropriate action.

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SC-18 Mobile Code SC-18-4 The information system prevents the automatic execution of mobile code in [Assignment: organization-defined software applications] and requires [Assignment: organization-defined actions] prior to executing the code.

Implementation Point(s): MCDS and wireless workstations.

Description: The wireless workstations are configured with malicious code defence agents that operate under the policies defined within the MCDS to detect and inspect data for unauthorized mobile code and to take the appropriate action.

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SC-20 Secure Name/Address Resolution Service (Authoritative Source) SC-20-A The information system provides additional data origin and integrity artefacts along with the authoritative data the system returns in response to name/address resolution queries.

Implementation Point(s): Network Service

Description: The DNS functionality of the Network Service provides name/address resolution service provides additional data origin and integrity artefacts along with the authoritative data it returns in response to resolution queries.

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SC-20 Secure Name/Address Resolution Service (Authoritative Source) SC-20-1 The information system, when operating as part of a distributed, hierarchical namespace, provides the means to indicate the security status of child subspaces and (if the child supports secure resolution services) enable verification of a chain of trust among parent and child domains.

Implementation Point(s): Network Service

Description: The DNS functionality of the Network Service provides the means to indicate the security status of child subspaces and (if the child supports secure resolution services) enable verification of a chain of trust among parent and child domains when operating as part of a distributed, hierarchical namespace.

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SC-21 Secure Name/Address Resolution Service (Recursive or Caching Resolver) SC-21-A The information system performs data origin authentication and data integrity verification on the name/address resolution responses the system receives from authoritative sources when requested by client systems.

Implementation Point(s): Network Service

Description: The DNS functionality of the Network Service performs data origin authentication and data integrity verification only when requested by an internal wireless user station.

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SC-21 Secure Name/Address Resolution Service (Recursive or Caching Resolver) SC-21-1 The information system performs data origin authentication and data integrity verification on all resolution responses whether or not local clients explicitly request this service.

Implementation Point(s): Network Service

Description: The DNS functionality of the Network Service always performs data origin authentication and data integrity verification.

 C
SC-22 Architecture and Provisioning for Name/Address Resolution Service SC-22-A The information systems that collectively provide name/address resolution service for a organization are fault-tolerant and implement internal/external role separation.

Implementation Point(s): Network Service

Description: The DNS functionality of the Network Service is fault tolerant and implements role separation.

 C
SC-23 Session Authenticity SC-23-A The information system provides mechanisms to protect the authenticity of communications sessions.

Implementation Point(s): Wireless workstations, access points, perimeter wireless switch, user and perimeter INEs and black wireless components.

Description: Encrypted communications are supported between the wireless workstations and the thick access points or to the perimeter wireless switch if thin access points are used. The encryption protects the authenticity of communications sessions in the internal wireless user zone. For Protected C and Classified wireless service deployments the transmitted information is encrypted by the user and perimeter INEs. Encryption is implemented using CSEC-approved encryption mechanisms commensurate for the classification and sensitivity of the information and in accordance with the ITSA-11D CSEC Approved Cryptographic Algorithms for the Protection of Protected Information and for Electronic Authentication and Authorization Applications within the Government of Canada.

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SC-23 Session Authenticity SC-23-1 The information system invalidates session identifiers upon user logout or other session termination.

Implementation Point(s): Wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter each invalidate session identifiers upon user logout or other session termination. For Protected C and Classified wireless service deployments this security control requirement is implemented within the black wireless components.

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SC-23 Session Authenticity SC-23-2 The information system provides a readily observable logout capability whenever authentication is used to gain access to web pages.

Implementation Point(s): External user and external administrator proxy and components.

Description: If any of the access points, sensors, perimeter wireless/wired switch or internal wireless user perimeter requires the use of authentication through a web page, the web page will provide a readily observable logout capability. For Protected C and Classified wireless service deployments this security control requirement is implemented within the black wireless components.

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SC-23 Session Authenticity SC-23-3 The information system generates a unique session identifier for each session and recognizes only session identifiers that are system-generated.

Implementation Point(s): Wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter each use unique session identifiers for each session and recognize only session identifiers that are system-generated. For Protected C and Classified wireless service deployments this security control requirement is implemented within the black wireless components.

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SC-23 Session Authenticity SC-23-4 The information system generates unique session identifiers with [Assignment: organization-defined randomness requirements].

Implementation Point(s): Wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter each generates unique session identifiers with [Assignment: organization-defined randomness requirements]. For Protected C and Classified wireless service deployments this security control requirement is implemented within the black wireless components.

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SC-24 Fail in Known State SC-24-A The information system fails to a [Assignment: organization-defined known-state] for [Assignment: organization-defined types of failures] preserving [Assignment: organization-defined system state information] in failure.

Implementation Point(s): Wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter fail to a [Assignment: organization-defined known-state] for [Assignment: organization-defined types of failures]. For Protected C and Classified wireless service deployments this security control requirement is implemented within the black wireless components.

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SC-25 Thin Nodes NA This security control and its technology-related control elements are not applicable to the business use case since the use of thin nodes is not within scope of the business use case. -
SC-26 Honeypots NA This security control and its technology-related control elements are not applicable to the business use case since the use of honey pots is not within scope of the business use case. -
SC-27 Operating System-Independent Applications SC-27-A The information system includes: [Assignment: organization-defined operating system- independent applications].

Implementation Point(s): NA

Description: Security of applications accessed by the internal wireless users is not within scope of the business use case.

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SC-28 Protection of Information at Rest SC-28-A The information system protects the confidentiality and integrity of information at rest.

Implementation Point(s): Wireless workstations

Description: The wireless workstations are configured to protect the confidentiality of their information at rest.

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SC-28 Protection of Information at Rest SC-28-1 The organization employs cryptographic mechanisms to prevent unauthorized disclosure and modification of information at rest unless otherwise protected by alternative physical measures. The cryptography is compliant with the requirements of control SC-13

Implementation Point(s): Wireless workstations

Description: The wireless workstations are configured with cryptographic mechanisms to protect the confidentiality and integrity of their information at rest. The cryptography is compliant with the requirements of control SC-13.

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SC-29 Heterogeneity SC-29-A The organization employs diverse information technologies in the implementation of the information system.

Implementation Point(s): Access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The use of diverse information technologies is supported within the access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter components. However this may not be possible if the wireless components are selected from a single vendor to facilitate successful integration with each other. For Protected C and Classified wireless service deployments this security control requirement is implemented within the black wireless components.

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SC-30 Virtualization Techniques SC-30-A The organization employs virtualization techniques to present information system components as other types of components, or components with differing configurations.

Implementation Point(s): Access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The use of virtualization techniques is supported within the access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter. However this may not be possible if the wireless components are firmware-based appliances rather than operating system-based components. Firmware-based appliances are typically less flexible than operating system-based components in their configuration and therefore it may not allow for the possibility to configure the appliances as other types of components. For Protected C and Classified wireless service deployments this security control requirement is implemented within the black wireless components.

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SC-30 Virtualization Techniques SC-30-1 The organization employs virtualization techniques to support the deployment of a diversity of operating systems and applications that are changed [Assignment: organization-defined frequency].

Implementation Point(s): Access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The use of virtualization techniques is supported within the access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter. However this may not be possible if the wireless components are firmware-based appliances rather than operating system-based components. Firmware-based appliances are typically less flexible than operating system-based components in their configuration and therefore it may not allow for the possibility to configure the appliances as other types of components. For Protected C and Classified wireless service deployments this security control requirement is implemented within the black wireless components.

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SC-30 Virtualization Techniques SC-30-2 The organization employs randomness in the implementation of the virtualization techniques.

Implementation Point(s): Access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter use randomness in the implementation of virtualization techniques to present information system components as other types of components. However this may not be possible if the wireless components are firmware-based appliances rather than operating system-based components. Firmware-based appliances are typically less flexible than operating system-based components in their configuration and therefore it may not allow for the possibility to configure the appliances as other types of components. For Protected C and Classified wireless service deployments this security control requirement is implemented within the black wireless components.

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SC-32 Information System Partitioning SC-32-A The organization partitions the information system into components residing in separate physical domains (or environments) as deemed necessary.

Implementation Point(s): Network Service

Description: The Network Service implements zones and sub-zones used to segregate components within the departmental network based on their security policies.

 C
SC-33 Transmission Preparation Integrity SC-33-A The information system protects the integrity of information during the processes of data aggregation, packaging, and transformation in preparation for transmission.

Implementation Point(s): Wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter protect the integrity of information during the processes of data aggregation, packaging, and transformation in preparation for transmission. For Protected C and Classified wireless service deployments this security control requirement is implemented within the black wireless components.

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SC-34 Non-Modifiable Executable Programs SC-34-A The information system at [Assignment: organization-defined information system components] loads and executes the operating environment from hardware-enforced, read-only media.

Implementation Point(s): Wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter identified in [Assignment: organization-defined information system components] load and execute their operating environment from hardware-enforced, read-only media. For Protected C and Classified wireless service deployments this security control requirement is implemented within the black wireless components.

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SC-34 Non-Modifiable Executable Programs SC-34-B The information system at [Assignment: organization-defined information system components] loads and executes [Assignment: organization-defined applications] from hardware-enforced, read-only media.

Implementation Point(s): Wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter identified in [Assignment: organization-defined information system components] load and execute [Assignment: organization-defined applications] from hardware-enforced, read-only media.

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SC-34 Non-Modifiable Executable Programs SC-34-1 The organization employs [Assignment: organization-defined information system components] with no writeable storage that is persistent across component restart or power on/off.

Implementation Point(s): Wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter identified in [Assignment: organization-defined information system components] are configured with no writeable storage that is persistent across component restart or power on/off.

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SC-100 Source Authentication SC-100-A The information system allows a message recipient to verify the claimed source identifier in a message.

Implementation Point(s): Wireless workstations

Description: Functionality for verification of claimed source identifier in a message is supported within the operating system and applications hosted on the wireless workstations.

 -
SC-100 Source Authentication SC-100-1 Authentication of the claimed identifier in the message is cryptographically based.

Implementation Point(s): Wireless workstations

Description: Functionality for verification of claimed source identifier in a message is supported within the operating system and applications hosted on the wireless workstations and is cryptographically based.

 -
SC-100 Source Authentication SC-100-2 The organization employs CMVP-certified cryptography for digital signature generation and verification. Refer to control SC-13.

Implementation Point(s): Wireless workstations

Description: Functionality for verification of claimed source identifier in a message is supported within the operating system and applications hosted on the wireless workstations and employs CMVP-certified cryptography for digital signature generation and verification.

 -
SC-100 Source Authentication SC-100-3 The organization employs CSEC-approved cryptography and protocols to implement the authentication. Refer to control SC-13.

Implementation Point(s): Wireless workstations

Description: Functionality for verification of claimed source identifier in a message is supported within the operating system and applications hosted on the wireless workstations and employs CSEC-approved cryptography and protocols to implement the authentication.

 -
SC-101 Unclassified Telecommunications Systems in Secure Facilities NA This security control and its technology-related control elements are not applicable since the use of Unclassified telecommunications systems in secure facilities is not applicable to the business use case. -
SI-2 Flaw Remediation SI-2-1 The organization centrally manages the flaw remediation process and installs software updates automatically.

Implementation Point(s): Remediation Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The Remediation Service automates the collection, analysis, and provisioning of software patches to the wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter that are compatible with the Remediation Service. For Protected C and Classified wireless service deployments the Remediation Service is supported on the black network for the black wireless components.

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SI-2 Flaw Remediation SI-2-2 The organization employs automated mechanisms [Assignment: organization-defined frequency] to determine the state of information system components with regard to flaw remediation.

Implementation Point(s): Remediation Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The Remediation Service automates the analysis at [Assignment: organization-defined frequency] of the state of information system components with regard to flaw remediation. For Protected C and Classified wireless services deployments this security control requirement is implemented within the black network Remediation Service for black wireless components.

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SI-2 Flaw Remediation SI-2-4 The organization employs automated patch management tools to facilitate flaw remediation to [Assignment: organization-defined information system components].

Implementation Point(s): Remediation Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The Remediation Service automates the collection, analysis, and provisioning of software patches to the wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter that are compatible with the Remediation Service. For Protected C and Classified wireless service deployments the Remediation Service is supported on the black network for the black wireless components.

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SI-3 Malicious Code Protection SI-3-A The organization employs malicious code protection mechanisms at information system entry and exit points and at workstations, servers, or mobile computing devices on the network to detect and eradicate malicious code: (a) transported by electronic mail, electronic mail attachments, web accesses, removable media, or other common means; or (b) inserted through the exploitation of information system vulnerabilities.

Implementation Point(s): MCDS, wireless workstations and internal wireless user perimeter.

Description: The wireless workstations are configured with malicious code defence agents that operate under the policies defined within the MCDS to detect and inspect data to detect and eradicate malicious code. The internal wireless user perimeter monitors communications leaving and entering the internal wireless user zone to detect and inspect data to detect and eradicate malicious code.

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SI-3 Malicious Code Protection SI-3-C The organization configures malicious code protection mechanisms to: (a) perform periodic scans of the information system [Assignment: organization-defined frequency] and real-time scans of files from external sources as the files are downloaded, opened, or executed in accordance with organizational security policy; and (b) [Selection (one or more): block malicious code; quarantine malicious code; send alert to administrator; [Assignment: organization-defined action]] in response to malicious code detection.

Implementation Point(s): MCDS, wireless workstations and internal wireless user perimeter.

Description: The wireless workstations are configured with malicious code defence agents that operate under the policies defined within the MCDS to include periodic scans [Assignment: organization-defined frequency] and real-time scans of files from external sources as the files are downloaded, opened, or executed in accordance with organizational security policy; and [Selection (one or more): block malicious code; quarantine malicious code; send alert to administrator; [Assignment: organization-defined action]] in response to malicious code detection.

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SI-3 Malicious Code Protection SI-3-1 The organization centrally manages malicious code protection mechanisms.

Implementation Point(s): MCDS, wireless workstations and internal wireless user perimeter.

Description: The MCDS centrally manages malicious code protection mechanisms implemented on the wireless workstations and internal wireless user perimeter.

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SI-3 Malicious Code Protection SI-3-2 The information system automatically updates malicious code protection mechanisms (including signature definitions).

Implementation Point(s): MCDS

Description: The MCDS includes the ability to automatically update its supporting software components or signature definitions.

 C
SI-3 Malicious Code Protection SI-3-3 The information system prevents non-privileged users from circumventing malicious code protection capabilities.

Implementation Point(s): MCDS, Authentication and Authorization Service and wireless workstations.

Description: The wireless workstations are configured with malicious code defence agents that operate under the policies defined within the MCDS to detect and inspect data to detect and eradicate malicious code. Authorizations to the agents’ configuration are assigned within the Authentication and Authorization Service for internal wireless users and are enforced within the access control functionality of the wireless workstations to prevent circumvention of host-based malicious code protection capabilities.

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SI-3 Malicious Code Protection SI-3-4 The information system updates malicious code protection mechanisms only when directed by a privileged user.

Implementation Point(s): MCDS

Description: The MCDS includes the ability to automatically update its supporting software components or signature definitions when directed by appropriately privileged administrator.

 C
SI-4 Information System Monitoring SI-4-A The organization monitors events on the information system in accordance with [Assignment: organization-defined monitoring objectives] and detects information system attacks.

Implementation Point(s): WIDS Service, sensors, access points and IDS Service

Description: The WIDS Service together with its sensors (overlay mode WIDS) or access points (integrated mode WIDS) monitor for events on the information system in accordance with [Assignment: organization-defined monitoring objectives] and detects information system attacks within the internal wireless user zone while the IDS Service monitors for denial of service attacks within the rest of the departmental network. For Protected C and Classified wireless services deployments the WIDS Service is implemented within the black network using either black sensors (overlay mode WIDS) or black access points (integrated mode WIDS).

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SI-4 Information System Monitoring SI-4-C The organization deploys monitoring devices: (a) strategically within the information system to collect organization-determined essential information; and (b) at ad hoc locations within the system to track specific types of transactions of interest to the organization.

Implementation Point(s): WIDS Service, sensors, access points and IDS Service

Description: The WIDS Service together with its sensors (overlay mode WIDS) or access points (integrated mode WIDS) are deployed (i) strategically within the internal wireless user zone to collect organization-determined essential information; and (ii) at ad hoc locations within the system to track specific types of transactions of interest to the organization. The IDS Service monitors for denial of service attacks within the rest of the departmental network. For Protected C and Classified wireless services deployments the WIDS Service is implemented within the black network using either black sensors (overlay mode WIDS) or black access points (integrated mode WIDS).

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SI-4 Information System Monitoring SI-4-1 The organization interconnects and configures individual intrusion detection tools into a system wide intrusion detection system using common protocols.

Implementation Point(s): WIDS Service, sensors, access points and IDS Service

Description: The WIDS Service together with its sensors (overlay mode WIDS) or access points (integrated mode WIDS) integrate with the IDS Service to provide a system wide intrusion detection system. For Protected C and Classified wireless services deployments the WIDS Service is implemented within the black network using either black sensors (overlay mode WIDS) or black access points (integrated mode WIDS) and cannot integrate with the IDS Service.

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SI-4 Information System Monitoring SI-4-2 The organization employs automated tools to support near real-time analysis of events.

Implementation Point(s): WIDS Service, sensors, access points and IDS Service

Description: The WIDS Service together with its sensors (overlay mode WIDS) or access points (integrated mode WIDS) support near-real-time analysis of events within the internal wireless user zone while the IDS Service supports near-real-time analysis of events within the rest of the departmental network. For Protected C and Classified wireless services deployments the WIDS Service is implemented within the black network using either black sensors (overlay mode WIDS) or black access points (integrated mode WIDS).

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SI-4 Information System Monitoring SI-4-3 The organization employs automated tools to integrate intrusion detection tools into access control and flow control mechanisms for rapid response to attacks by enabling reconfiguration of these mechanisms in support of attack isolation and elimination.

Implementation Point(s): WIDS Service, sensors, access points, and internal wireless user perimeter.

Description: The WIDS Service together with its sensors (overlay mode WIDS) or access points (integrated mode WIDS) integrate with the internal wireless user perimeter to control information flow in order to support attack isolation and elimination. For Protected C and Classified wireless services deployments the WIDS Service is implemented within the black network using either black sensors (overlay mode WIDS) or black access points (integrated mode WIDS).

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SI-4 Information System Monitoring SI-4-4 The information system monitors inbound and outbound communications for unusual or unauthorized activities or conditions.

Implementation Point(s): WIDS Service, sensors, access points, and internal wireless user perimeter.

Description: The WIDS Service together with its sensors (overlay mode WIDS) or access points (integrated mode WIDS) and the internal wireless user perimeter monitor inbound and outbound communications for unusual or unauthorized activities or conditions. For Protected C and Classified wireless services deployments the WIDS Service is implemented within the black network using either black sensors (overlay mode WIDS) or black access points (integrated mode WIDS).

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SI-4 Information System Monitoring SI-4-5 The information system provides near real-time alerts when the following indications of compromise or potential compromise occur: [Assignment: organization-defined list of compromise indicators].

Implementation Point(s): WIDS Service, sensors, access points and IDS Service.

Description: The WIDS Service together with its sensors (overlay mode WIDS) or access points (integrated mode WIDS) detect events within the internal wireless user zone and provides a real-time alert when the following indications of compromise or potential compromise occur: [Assignment: organization-defined list of compromise indicators]. For Protected C and Classified wireless services deployments the WIDS Service is implemented within the black network using either black sensors (overlay mode WIDS) or black access points (integrated mode WIDS).

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SI-4 Information System Monitoring SI-4-6 The information system prevents non-privileged users from circumventing intrusion detection and prevention capabilities.

Implementation Point(s): Authentication and Authorization Service and wireless workstations.

Description: Authorizations are assigned within the Authentication and Authorization Service for internal wireless users and enforced within the access control functionality of the wireless workstations to prevent internal wireless users from circumventing host-based intrusion detection and prevention capabilities.

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SI-4 Information System Monitoring SI-4-7 The information system notifies [Assignment: organization-defined list of incident response personnel (identified by name and/or by role)] of suspicious events and takes [Assignment: organization-defined list of least-disruptive actions to terminate suspicious events].

Implementation Point(s): WIDS Service, IDS Service and Audit Service.

Description: The WIDS Service, IDS Service and Audit Service notify [Assignment: organization-defined list of incident response personnel] of suspicious events and takes [Assignment: organization-defined list of least-disruptive actions to terminate suspicious events]. For Protected C and Classified wireless service deployments the WIDS Service and Audit Service are implemented within the black network.

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SI-4 Information System Monitoring SI-4-8 The organization protects information obtained from intrusion-monitoring tools from unauthorized access, modification, and deletion.

Implementation Point(s): Authentication and Authorization Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Authorizations are assigned within the Authentication and Authorization Service for wireless component administrators and enforced within the access control functionality of the WIDS and IDS Services. These authorizations ensure that information obtained from intrusion monitoring tools shall be protected against unauthorized access, modification, and deletion. For Protected C and Classified wireless service deployments, the authorizations are assigned within the black network Authentication and Authorization Service for black wireless component administrators and enforced within the access control functionality of the black WIDS Service.

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SI-4 Information System Monitoring SI-4-10 The organization makes provisions so that encrypted traffic is visible to information system monitoring tools.

Implementation Point(s): IDS Service

Description: Internal wireless user content can be viewed, listened to, or captured in real-time provided it is not encrypted. The internal wireless user communications between the station and access points (if thick access points are used) or wireless switch (if thin access points are used) are encrypted. The IDS Service can be used to access the unencrypted content at the internal wireless user perimeter.

 C
SI-4 Information System Monitoring SI-4-11 The organization analyzes outbound communications traffic at the external boundary of the system (i.e., system perimeter) and, as deemed necessary, at selected interior points within the system (e.g., subnets, subsystems) to discover anomalies.

Implementation Point(s): WIDS Service, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The WIDS Service together with its sensors (overlay mode WIDS) or access points (integrated mode WIDS) and the internal wireless user perimeter monitor inbound and outbound communications for unusual or unauthorized activities or conditions. For Protected C and Classified wireless services deployments the WIDS Service is implemented within the black network using either black sensors (overlay mode WIDS) or black access points (integrated mode WIDS).

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SI-4 Information System Monitoring SI-4-12 The organization employs automated mechanisms to alert security personnel of the following inappropriate or unusual activities with security implications: [Assignment: organization-defined list of inappropriate or unusual activities that trigger alerts].

Implementation Point(s): WIDS Service, sensors, access points, IDS Service and internal wireless user perimeter.

Description: The WIDS Service together with its sensors (overlay mode WIDS) or access points (integrated mode WIDS), IDS Service and internal wireless user perimeter alert security personnel of the following inappropriate or unusual activities with security implications: [Assignment: organization-defined list of inappropriate or unusual activities that trigger alerts]. For Protected C and Classified wireless services deployments the WIDS Service is implemented within the black network using either black sensors (overlay mode WIDS) or black access points (integrated mode WIDS).

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SI-4 Information System Monitoring SI-4-13 The organization: (a) Analyzes communications traffic/event patterns for the information system; (b) Develops profiles representing common traffic patterns and/or events; and (c) Uses the traffic/event profiles in tuning system-monitoring devices to reduce the number of false positives to [Assignment: organization-defined measure of false positives] and the number of false negatives to [Assignment: organization-defined measure of false negatives].

Implementation Point(s): WIDS Service, sensors, access points and IDS Service.

Description: The WIDS Service together with its sensors (overlay mode WIDS) or access points (integrated mode WIDS) and IDS Service (a) analyzes communications traffic/event patterns for the information system; (b) develops profiles representing common traffic patterns and/or events; and (c) uses the traffic/event profiles in tuning system-monitoring devices to reduce the number of false positives to [Assignment: organization-defined measure of false positives] and the number of false negatives to [Assignment: organization-defined measure of false negatives]. For Protected C and Classified wireless services deployments the WIDS Service is implemented within the black network using either black sensors (overlay mode WIDS) or black access points (integrated mode WIDS).

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SI-4 Information System Monitoring SI-4-14 The organization employs a wireless intrusion detection system to identify rogue wireless devices and to detect attack attempts and potential compromises/breaches to the information system.

Implementation Point(s): WIDS Service, sensors, access points and IDS Service.

Description: The WIDS Service together with its sensors (overlay mode WIDS) or access points (integrated mode WIDS) monitor wireless communications to identify rogue wireless devices and to detect attack attempts and potential compromises/breaches to the information system. For Protected C and Classified wireless services deployments the WIDS Service is implemented within the black network using either black sensors (overlay mode WIDS) or black access points (integrated mode WIDS).

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SI-4 Information System Monitoring SI-4-15 The organization employs an intrusion detection system to monitor wireless communications traffic as the traffic passes from wireless to wireline networks.

Implementation Point(s): WIDS Service, sensors, access points and IDS Service.

Description: The WIDS Service together with its sensors (overlay mode WIDS) or access points (integrated mode WIDS) monitor wireless communications traffic as the traffic passes from wireless to wireline networks. For Protected C and Classified wireless services deployments the WIDS Service is implemented within the black network using either black sensors (overlay mode WIDS) or black access points (integrated mode WIDS).

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SI-6 Security Functionality Verification SI-6-A The information system verifies the correct operation of security functions [Selection (one or more): [Assignment: organization-defined system transitional states]; upon command by user with appropriate privilege; periodically every [Assignment: organization-defined time-period] and [Selection (one or more): notifies system administrator; shuts the system down; restarts the system; [Assignment: organization-defined alternative action(s)]] when anomalies are discovered.

Implementation Point(s): Wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter verify the correct operation of security functions [Selection (one or more): [Assignment: organization-defined system transitional states]; upon command by user with appropriate privilege; periodically every [Assignment: organization-defined time-period] and [Selection (one or more): notifies system administrator; shuts the system down; restarts the system; [Assignment: organization-defined alternative action(s)]] when anomalies are discovered. For Protected C and Classified wireless services deployments this security control requirement is implemented within the black wireless components.

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SI-6 Security Functionality Verification SI-6-1 The information system provides notification of failed automated security tests.

Implementation Point(s): Audit Service, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter transmit audit records identifying failed automated security tests to the Audit Service. For Protected C and Classified wireless services deployments this security control requirement is implemented within the black network Audit Service and black wireless components.

 S
SI-6 Security Functionality Verification SI-6-2 The information system provides automated support for the management of distributed security testing.

Implementation Point(s): Audit Service, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter verify the correct operation of their critical security functions and report the results of these tests in audit records sent to the Audit Service. For Protected C and Classified wireless service deployments, the security control requirement is implemented within the black network Audit Service, and the black wireless components.

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SI-7 Software and Information Integrity SI-7-A The information system detects unauthorized changes to software and information.

Implementation Point(s): CMS, File Integrity Service, Authentication and Authorization Service, Audit Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Authorizations for access to software, information and functionality are configured within the Authorization Service and enforced within the access control functionality of the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter. Any actions that are not authorized will be reported by the audit capability of the components to the Audit Service. The CMS supports the ability to periodically audit component software and information configurations and to compare these audited configurations against approved configurations in order to detect any unauthorized changes. The File Integrity Service supports the functionality to detect unauthorized modifications to files on components that support the installation of a File Integrity Service agent. The CMS and File Integrity Service can report any detected unauthorized changes to the appropriate individual either directly (e.g., email notification) or indirectly by sending reports to the Audit Service. For Protected C and Classified wireless service deployments, the security control requirement is supported by the black network CMS, File Integrity Service and Audit Service for the black wireless components.

 S
SI-7 Software and Information Integrity SI-7-2 The organization employs automated tools that provide notification to designated individuals upon discovering discrepancies during integrity verification.

Implementation Point(s): CMS, File Integrity Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The CMS and File Integrity Service can report any detected unauthorized changes to the appropriate individual either directly (e.g., email notification) or indirectly by sending reports to the Audit Service. For Protected C and Classified wireless service deployments, the security control requirement is supported by the black network CMS and File Integrity Service for the black wireless components

 S
SI-7 Software and Information Integrity SI-7-3 The organization employs centrally managed integrity verification tools.

Implementation Point(s): CMS, File Integrity Service, Audit Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The CMS supports the ability to periodically audit component software and information configurations and to compare these audited configurations against approved configurations in order to detect any unauthorized changes. The File Integrity Service supports the functionality to detect unauthorized modifications to files on components that support the installation of a File Integrity Service agent. The CMS and File Integrity Service can report any detected unauthorized changes to the appropriate individual either directly (e.g., email notification) or indirectly by sending reports to the Audit Service. For Protected C and Classified wireless services deployments, the security control requirement is also supported by the black network CMS, File Integrity Service and Audit Service for the black wireless components

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SI-8 Spam Protection SI-8-A The organization employs spam protection mechanisms at information system entry and exit points and at workstations, servers, or mobile computing devices on the network to detect and take action on unsolicited messages transported by electronic mail, electronic mail attachments, web accesses, or other common means.

Implementation Point(s): Mail Service

Description: SPAM protection mechanisms are implemented within the Mail Service accessed by the wireless workstations.

 C
SI-8 Spam Protection SI-8-1 The organization centrally manages spam protection mechanisms.

Implementation Point(s): Mail Service

Description: The Mail Service’s SPAM protection software products and their configuration are centrally managed.

 C
SI-8 Spam Protection SI-8-2 The information system automatically updates spam protection mechanisms (including signature definitions).

Implementation Point(s): Mail Service

Description: The Mail Service’s SPAM protection products include the ability to perform automatic updates including signature definitions.

 C
SI-9 Information Input Restrictions SI-9-A The organization restricts the capability to input information to the information system to authorized personnel.

Implementation Point(s): Authentication and Authorization Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Authorizations are assigned within the Authentication and Authorization Service for internal wireless users and wireless component administrators and enforced within the access control functionality of the wireless workstations (when accessing end user services), access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter. These authorizations restrict the capability to input information to the information system to authorized personnel only. For Protected C and Classified wireless services deployments, the security control requirement is also implemented within the black network Authentication and Authorization Service and access control functionality of the black wireless components.

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SI-10 Information Input Validation SI-10-A The information system checks the validity of information inputs.

Implementation Point(s): Authentication and Authorization Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Authorizations are assigned within the Authentication and Authorization Service for internal wireless users and wireless component administrators and enforced within the access control functionality of the wireless workstations (when accessing internal wireless user services), access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter. These authorizations restrict the capability to input information to the information system to authorized personnel only. The information is checked for accuracy, completeness, validity, and authenticity at the component where it is inputted. For Protected C and Classified wireless services deployments, the security control requirement is also implemented within the black network Authentication and Authorization Service and access control functionality of the black wireless components.

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SI-11 Error Handling SI-11-A The information system identifies potentially security-relevant error conditions.

Implementation Point(s): Audit Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The auditing functionality of the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter support reporting of error conditions to the Audit Service. For Protected C and Classified wireless services deployments, the security control requirement is also implemented within the black network Audit Service and audit functionality of the black wireless components.

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SI-11 Error Handling SI-11-B The information system generates error messages that provide information necessary for corrective actions without revealing [Assignment: organization-defined sensitive or potentially harmful information] in error logs and administrative messages that could be exploited by adversaries.

Implementation Point(s): Audit Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: The auditing functionality of the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter supports the ability to configure the type of events reported to the Audit Service that do not contain potentially harmful information that could be exploited by adversaries. For Protected C and Classified wireless services deployments, the security control requirement is also implemented within the black network Audit Service and audit functionality of the black wireless components.

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SI-11 Error Handling SI-11-C The information system reveals error messages only to authorized personnel.

Implementation Point(s): Audit Service, Authentication and Authorization Service, wireless workstations, access points, sensors, perimeter wireless/wired switch, internal wireless user perimeter and black wireless components.

Description: Access authorizations for authorized personnel to audit information and tools within the Audit Service are configured within the Authentication and Authorization Service and enforced by the Audit Service. Access authorizations for authorized personnel to audit information within the wireless workstations, access points, sensors, perimeter wireless/wired switch and internal wireless user perimeter are configured within the Authentication and Authorization Service and enforced by the access control functionality of the wireless components. For Protected C and Classified wireless services deployments, the security control requirement is also implemented within the black network Authentication and Authorization Service, Audit Service and access control functionality of the black wireless components.

 S

3 References

[Reference 1]
The IEEE Standards Association (standards.iee.org)
[Reference 2]
ITSG-33 IT Security Risk Management: A Lifecycle Approach; CSEC (Nov 2012)
[Reference 3]
ITSG-41 Security Requirements for Wireless Local Area Networks; CSEC (March 2013)
[Reference 4]
ITSG-41 Annex 1 - Government Hot Spot High-Level Design Guidance; CSEC (March 2013)
[Reference 5]
ITSG-41 Annex 3 - Wired Network to Wired Network via Wireless Bridge High-Level Design; CSEC (March 2013)
[Reference 6]
ITSG-41 Annex 4 – Identification of Control Elements from Security Controls; CSEC (March 2013)
[Reference 7]
ITSG-38 Network Security Zoning Design Considerations for Placement of Services within Zones; CSEC (May 2009)
[Reference 8]
ITSG-13 Cryptographic Key Ordering Manual; CSEC (May 2006).

Notes

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