The Juniper SRX Services Gateway must terminate a device management session after 10 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. 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.

Verify idle-timeout is set for 10 minutes.

[edit] show system login

If a timeout value of 10 or less is not set for each class, this is a finding.

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