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

The ALG that is part of a CDS must apply information flow control to data transferred between security domains by means of a policy filter which consists of a set of hardware and/or software.

DISA Rule

SV-204913r1137548_rule

Vulnerability Number

V-204913

Group Title

SRG-NET-000019

Rule Version

SRG-NET-000019-ALG-000021

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

If the ALG is used as part of a CDS, configure the ALG to apply information flow control to data transferred between security domains by means of a policy filter which consists of a set of hardware and/or software.

Check Contents

If the ALG is not used as part of a CDS, this is not applicable.

Verify the ALG applies information flow control to data transferred between security domains by means of a policy filter which consists of a set of hardware and/or software.

If the ALG is not configured to apply information flow control to data transferred between security domains by means of a policy filter which consists of a set of hardware and/or software, this is a finding.

Vulnerability Number

V-204913

Documentable

False

Rule Version

SRG-NET-000019-ALG-000021

Severity Override Guidance

If the ALG is not used as part of a CDS, this is not applicable.

Verify the ALG applies information flow control to data transferred between security domains by means of a policy filter which consists of a set of hardware and/or software.

If the ALG is not configured to apply information flow control to data transferred between security domains by means of a policy filter which consists of a set of hardware and/or software, this is a finding.

Check Content Reference

M

Target Key

2904