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AC-12 (1)

AC-12 (1): User-Initiated Logouts / Message Displays

The information system:

AC-12 (1)(a): Provides a logout capability for user-initiated communications sessions whenever authentication is used to gain access to [Assignment: organization-defined information resources]; and

AC-12 (1)(b): Displays an explicit logout message to users indicating the reliable termination of authenticated communications sessions.

Supplemental

Information resources to which users gain access via authentication include, for example, local workstations, databases, and password-protected websites/web-based services. Logout messages for web page access, for example, can be displayed after authenticated sessions have been terminated. However, for some types of interactive sessions including, for example, file transfer protocol (FTP) sessions, information systems typically send logout messages as final messages prior to terminating sessions.

CIA Levels
Confidentiality	moderate
Integrity	moderate
Availability	unknown

Overlays
None

Related Controls

The controls below (if any) were marked by NIST as being related to AC-12 (1).

Control	Description
No controls

Enhancements

The controls below (if any) add on to the requirements of AC-12 (1).

Control	Description
No controls

Related CCIs

The CCIs below are tied to AC-12 (1).

CCI	Definition
CCI-002362	The organization defines the resources requiring information system authentication in order to gain access.
CCI-002363	The information system provides a logout capability for user-initiated communications sessions whenever authentication is used to gain access to organization-defined information resources.
CCI-002364	The information system displays an explicit logout message to users indicating the reliable termination of authenticated communications sessions.