STIGQter: STIG Summary: Microsoft Windows 11 Security Technical Implementation Guide Version: 2 Release: 8 Benchmark Date: 01 Jul 2026:

Windows 11 must not have portproxy enabled or in use.

DISA Rule

SV-257592r991589_rule

Vulnerability Number

V-257592

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

WN11-00-000395

Severity

CAT II

CCI(s)

• CCI-000381 - Configure the system to provide only organization-defined mission essential capabilities.

Weight

10

Fix Recommendation

Contact the Administrator to run "netsh interface portproxy delete" with elevation. Remove any enabled portproxies that may be configured.

Check Contents

Check the registry key for existence of proxied ports:
HKLM\SYSTEM\CurrentControlSet\Services\PortProxy\.

If the key contains v4tov4\tcp\ or is populated v4tov4\tcp\, this is a finding.

Run "netsh interface portproxy show all".

If the command displays any results, this is a finding.

Vulnerability Number

V-257592

Documentable

False

Rule Version

WN11-00-000395

Severity Override Guidance

Check the registry key for existence of proxied ports:
HKLM\SYSTEM\CurrentControlSet\Services\PortProxy\.

If the key contains v4tov4\tcp\ or is populated v4tov4\tcp\, this is a finding.

Run "netsh interface portproxy show all".

If the command displays any results, this is a finding.

Check Content Reference

M

Target Key

5471