For authenticated, proxied connections, the ALG must restrict user authentication traffic to specific authentication server(s).

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
SRG-NET-000138-ALG-000089	SRG-NET-000138-ALG-000089	SRG-NET-000138-ALG-000089_rule		Medium

Description
User authentication can be used as part of the policy filtering rule sets. Some URLs or network resources can be restricted to authenticated users only. Users are prompted by the application or browser for credentials. Authentication service may be provided by the ALG as an intermediary for the application; however, the authentication credential must be stored in the site's directory services server. This requirement only applies to components where this is specific to the function of the device or has the concept of an organizational user (e.g., proxy capability). This does not apply to authentication for the purpose of configuring the device itself (i.e., device management).

Description

User authentication can be used as part of the policy filtering rule sets. Some URLs or network resources can be restricted to authenticated users only. Users are prompted by the application or browser for credentials. Authentication service may be provided by the ALG as an intermediary for the application; however, the authentication credential must be stored in the site's directory services server. This requirement only applies to components where this is specific to the function of the device or has the concept of an organizational user (e.g., proxy capability). This does not apply to authentication for the purpose of configuring the device itself (i.e., device management).

STIG	Date
Application Layer Gateway Security Requirements Guide	2014-06-27

Details

Check Text ( C-SRG-NET-000138-ALG-000089_chk )
If the ALG does not provide user authentication proxy services, this is not a finding. Verify the ALG is configured to use a specific authentication server(s). If the ALG does not restrict user authentication traffic to a specific authentication server(s), this is a finding.

Fix Text (F-SRG-NET-000138-ALG-000089_fix)
Configure the ALG to use a specific authentication server(s).