Information
Terminating an idle session within a short time period reduces the window of opportunity for unauthorized personnel to take control of a management session. Quickly terminating an idle session also frees up resources.
This requirement does not mean that the device terminates all sessions or network access; it only ends the inactive session.
User accounts, including the account of last resort must be assigned to a login class. Configure all login classes with an idle timeout value. Pre-defined classes do not support configurations, therefore should not be used for DoD implementations. The root account cannot be assigned to a login-class which is why it is critical that this account be secured in accordance with DoD policy.
Solution
Configure all login classes with an idle timeout value.
[edit]
set system login-class <class name> idle-timeout 10
All users must be set to a login-class; however, to ensure that the CLI is set to a default timeout value, enter the following in operational mode:
set cli idle-timeout 10