The ALG must fail securely in the event of an operational failure.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-54639	SRG-NET-000365-ALG-000123	SV-68885r1_rule		Medium

Description
If a boundary protection device fails in an unsecure manner (open), information external to the boundary protection device may enter, or the device may permit unauthorized information release. Secure failure ensures when a boundary control device fails, all traffic will be subsequently denied. Fail secure is a condition achieved by employing information system mechanisms to ensure in the event of operational failures of boundary protection devices at managed interfaces (e.g., routers, firewalls, guards, and application gateways residing on protected subnetworks commonly referred to as demilitarized zones), information systems do not enter into unsecure states where intended security properties no longer hold.

Description

If a boundary protection device fails in an unsecure manner (open), information external to the boundary protection device may enter, or the device may permit unauthorized information release. Secure failure ensures when a boundary control device fails, all traffic will be subsequently denied. Fail secure is a condition achieved by employing information system mechanisms to ensure in the event of operational failures of boundary protection devices at managed interfaces (e.g., routers, firewalls, guards, and application gateways residing on protected subnetworks commonly referred to as demilitarized zones), information systems do not enter into unsecure states where intended security properties no longer hold.

STIG	Date
Application Layer Gateway Security Requirements Guide	2014-11-03

Details

Check Text ( C-55259r1_chk )
Verify the ALG fails securely in the event of an operational failure. If the ALG does not fail securely in the event of an operational failure, this is a finding.

Fix Text (F-59495r1_fix)
Configure the ALG to fail securely in the event of an operational failure.