The Dell OS10 Switch 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-269789	SRG-APP-000190-NDM-000267	OS10-NDM-000530	SV-269789r1051752_rule	2024-12-11	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. Satisfies: SRG-APP-000190-NDM-000267, SRG-APP-000186-NDM-000266, SRG-APP-000516-NDM-000336

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. Satisfies: SRG-APP-000190-NDM-000267, SRG-APP-000186-NDM-000266, SRG-APP-000516-NDM-000336

ℹ️ Check
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.

ℹ️ Check

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.

✔️ Fix
Configure the OS10 Switch to terminate the connection associated with a device management session at the end of the session or after five minutes of inactivity: OS10(config)# exec-timeout 300