The Edge SWG 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.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
high	V-279264	SRG-APP-000190-NDM-000267	SYME-ND-000660	SV-279264r1172802_rule	2025-12-18	1

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 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.

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 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.

ℹ️ Check
1. Log in to the Edge SWG SSH CLI. 2. Enter "show security". Under "Account", if "CLI session timeout" does not say "5 minutes", this is a finding. Under "Account", if "Web interface session timeout" does not say "5 minutes", this is a finding.

✔️ Fix
1. Log in to the Edge SWG SSH CLI. 2. Enter "enable" and "configure terminal". 3. Enter "security management web-timeout 5". 4. Enter "security management cli-timeout 5".