The Juniper SRX Services Gateway must terminate a device management session after 10 minutes of inactivity, except to fulfill documented and validated mission requirements.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-223231	JUSX-DM-000156	SV-223231r961068_rule		Medium

Description
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.

Description

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.

STIG	Date
Juniper SRX SG NDM Security Technical Implementation Guide	2024-06-10

Details

Check Text ( C-24904r513380_chk )
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.

Fix Text (F-24892r513381_fix)
Configure all login classes with an idle timeout value. [edit] set system login-class 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