AOS must terminate all network connections associated with a device management session at the end of the session, or the session must be terminated after five minutes of inactivity except to fulfill documented and validated mission requirements.

Terminating an idle session within a short time period reduces the window of opportunity for unauthorized personnel to take control of a management session enabled on the console or console port that has been left unattended. Quickly terminating an idle session will also free up resources committed by the managed network element.

Terminating network connections associated with communications sessions includes, for example, deallocating associated Transmission Control Protocol/Internet Protocol (TCP/IP) address/port pairs at the operating system level or deallocating networking assignments at the application level if multiple application sessions are using a single, operating system-level network connection. This does not mean that the device terminates all sessions or network access; it only ends the inactive session and releases the resources associated with that session.

Satisfies: SRG-APP-000190-NDM-000267, SRG-APP-000186-NDM-000266

Verify the AOS configuration with the following commands: show running-config | include "loginsession timeout" show web-server profile

If the login session timeout is not set to "5" (minutes), this is a finding.

If "User session timeout <30-3600> (seconds)" is not set to "300", this is a finding.

Configure AOS with the following commands: configure terminal loginsession timeout 5 web-server profile session-timeout 300 exit write memory