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

The ALG providing user authentication intermediary services using PKI-based user authentication must only accept end entity certificates issued by DoD PKI or DoD-approved PKI Certification Authorities (CAs) for the establishment of protected sessions.

DISA Rule

SV-205003r831380_rule

Vulnerability Number

V-205003

Group Title

SRG-NET-000355

Rule Version

SRG-NET-000355-ALG-000117

Severity

CAT II

CCI(s)

• CCI-002470 - Only allow the use of organization-defined certificate authorities for verification of the establishment of protected sessions.

Weight

10

Fix Recommendation

If PKI-based user authentication intermediary services are provided, configure the ALG to only accept end entity certificates issued by DoD PKI or DoD-approved PKI CAs for the establishment of protected sessions.

Check Contents

If the ALG does not provide PKI-based user authentication intermediary services, this is not applicable.

Verify the ALG only accepts end entity certificates issued by DoD PKI or DoD-approved PKI CAs for the establishment of protected sessions.

If the ALG accepts non-DoD approved PKI end entity certificates, this is a finding.

Vulnerability Number

V-205003

Documentable

False

Rule Version

SRG-NET-000355-ALG-000117

Severity Override Guidance

If the ALG does not provide PKI-based user authentication intermediary services, this is not applicable.

Verify the ALG only accepts end entity certificates issued by DoD PKI or DoD-approved PKI CAs for the establishment of protected sessions.

If the ALG accepts non-DoD approved PKI end entity certificates, this is a finding.

Check Content Reference

M

Target Key

2904