The network devices must time out access to the console port at 10 minutes or less of inactivity.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-3967	NET1624	SV-3967r4_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 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 device. Setting the timeout of the session to 10 minutes or less increases the level of protection afforded critical network components.

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 device. Setting the timeout of the session to 10 minutes or less increases the level of protection afforded critical network components.

STIG	Date
Firewall Security Technical Implementation Guide - Cisco	2017-12-07

Details

Check Text ( C-3511r5_chk )
Review the configuration and verify a session using the console port will time out after 10 minutes or less of inactivity. If console access is not configured to timeout at 10 minutes or less, this is a finding.

Fix Text (F-3900r4_fix)
Configure the timeout for idle console connection to 10 minutes or less.