Microsoft Windows Server 2025

Windows Server 2025 must not have the Peer Name Resolution Protocol installed

STIG ID: WN25-00-000340 | SRG: SRG-OS-000095-GPOS-00049 | Severity: Medium | CCI: CCI-000381 | Vulnerability ID: V-278019

Description

Unnecessary services increase the attack surface of a system. Some of these services may not support required levels of authentication or encryption or may provide unauthorized access to the system.

Check

C-82549r1180761_chk

Open PowerShell.

Enter "Get-WindowsFeature | Where Name -eq PNRP".

If "Installed State" is "Installed", this is a finding.

An Installed State of "Available" or "Removed" is not a finding.

Fix

F-82454r1180762_fix

Uninstall the "Peer Name Resolution Protocol" feature.

Start Server Manager.

Select the server with the feature.

Scroll down to "ROLES AND FEATURES" in the right pane.

Select "Remove Roles and Features" from the drop-down "TASKS" list.

Select the appropriate server on the "Server Selection" page and click "Next".

Deselect "Peer Name Resolution Protocol" on the "Features" page.

Click "Next" and "Remove" as prompted.