The BIG-IP appliance must be configured to initiate a session lock after a 10-minute period of inactivity.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-217382	F5BI-DM-000007	SV-217382r557520_rule		Medium

Description
A session lock is a temporary network device- or administrator-initiated action taken when the administrator stops work but does not log out of the network device. Rather than relying on the user to manually lock their management session prior to vacating the vicinity, network devices need to be able to identify when a management session has idled and take action to initiate the session lock. Once invoked, the session lock shall remain in place until the administrator re-authenticates. No other system activity aside from re-authentication shall unlock the management session. Note that CCI-001133 requires that administrative network sessions be disconnected after 10 minutes of idle time. So this requirement may only apply to local administrative sessions.

Description

A session lock is a temporary network device- or administrator-initiated action taken when the administrator stops work but does not log out of the network device. Rather than relying on the user to manually lock their management session prior to vacating the vicinity, network devices need to be able to identify when a management session has idled and take action to initiate the session lock. Once invoked, the session lock shall remain in place until the administrator re-authenticates. No other system activity aside from re-authentication shall unlock the management session. Note that CCI-001133 requires that administrative network sessions be disconnected after 10 minutes of idle time. So this requirement may only apply to local administrative sessions.

STIG	Date
F5 BIG-IP Device Management 11.x Security Technical Implementation Guide	2020-09-28

Details

Check Text ( C-18607r290700_chk )
Verify the BIG-IP appliance is configured to initiate a session lock after a 10-minute period of inactivity. Navigate to the BIG-IP System manager >> System >> Preferences. Under "Security Settings", ensure that "Idle Time Before Automatic Logout" is less than or equal to 600 seconds. If a session lock is not initiated after a 10-minute period of inactivity, this is a finding.

Fix Text (F-18605r290701_fix)
Configure the BIG-IP appliance to initiate a session lock after a 10-minute period of inactivity.