V-269789

Discussion

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. In addition, 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 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, SRG-APP-000516-NDM-000336

Check Content

Determine if the network device terminates the connection associated with a device management session at the end of the session or after five minutes of inactivity. 

Review the running-configuration. Verify the configuration includes "exec-timeout 300" which disconnects sessions after five minutes of inactivity.

If the network device does not terminate the connection associated with a device management session at the end of the session or after five minutes of inactivity, this is a finding.