STIGQter: STIG Summary: Application Layer Gateway Security Requirements Guide Version: 2 Release: 4 Benchmark Date: 01 Jul 2026:

The ALG must restrict or block harmful or suspicious communications traffic by controlling the flow of information between interconnected networks based on attribute- and content-based inspection of the source, destination, headers, and/or content of the communications traffic.

DISA Rule

SV-204911r1137546_rule

Vulnerability Number

V-204911

Group Title

SRG-NET-000019

Rule Version

SRG-NET-000019-ALG-000018

Severity

CAT II

CCI(s)

• CCI-001414 - Enforce approved authorizations for controlling the flow of information between connected systems based on organization-defined information flow control policies.

Weight

10

Fix Recommendation

Configure the ALG to restrict or block harmful or suspicious communications traffic by controlling the flow of information between interconnected networks based on attribute- and content-based inspection of the source, destination, headers, and/or content of the communications traffic

Check Contents

Verify the ALG restricts or blocks harmful or suspicious communications traffic by controlling the flow of information between interconnected networks based on attribute- and content-based inspection of the source, destination, headers, and/or content of the communications traffic.

If the ALG does not restrict or block harmful or suspicious communications traffic by controlling the flow of information between interconnected networks based on attribute- and content-based inspection of the source, destination, headers, and/or content of the communications traffic, this is a finding.

Vulnerability Number

V-204911

Documentable

False

Rule Version

SRG-NET-000019-ALG-000018

Severity Override Guidance

Verify the ALG restricts or blocks harmful or suspicious communications traffic by controlling the flow of information between interconnected networks based on attribute- and content-based inspection of the source, destination, headers, and/or content of the communications traffic.

If the ALG does not restrict or block harmful or suspicious communications traffic by controlling the flow of information between interconnected networks based on attribute- and content-based inspection of the source, destination, headers, and/or content of the communications traffic, this is a finding.

Check Content Reference

M

Target Key

2904