The firewall must fail to a secure state if the firewall filtering functions fail unexpectedly.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-79463	SRG-NET-000235-FW-000133	SV-94169r1_rule		Medium

Description
Firewalls that fail suddenly and with no incorporated failure state planning may leave the hosting system available but with a reduced security protection. Failure to a known safe state helps prevent systems from failing to a state that may cause unauthorized access to make changes to the firewall filtering functions. This applies to the configuration of the gateway or network traffic security function of the device. Abort refers to stopping the firewall filtering function before it has finished naturally. The term abort refers to both requested and unexpected terminations.

Description

Firewalls that fail suddenly and with no incorporated failure state planning may leave the hosting system available but with a reduced security protection. Failure to a known safe state helps prevent systems from failing to a state that may cause unauthorized access to make changes to the firewall filtering functions. This applies to the configuration of the gateway or network traffic security function of the device. Abort refers to stopping the firewall filtering function before it has finished naturally. The term abort refers to both requested and unexpected terminations.

STIG	Date
Firewall Security Requirements Guide	2018-03-21

Details

Check Text ( C-79079r1_chk )
Review the firewall configuration to verify it fails to a secure state if the firewall filtering functions fail unexpectedly. If the firewall does not fail to a secure state if the firewall filtering functions fail unexpectedly, this is a finding.

Fix Text (F-86235r1_fix)
Configure the firewall to fail to a secure state if the firewall filtering functions fail unexpectedly.