Windows Server 2019 must not have the Peer Name Resolution Protocol installed.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-205679	WN19-00-000340	SV-205679r569188_rule		Medium

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.

STIG	Date
Microsoft Windows Server 2019 Security Technical Implementation Guide	2023-09-11

Details

Check Text ( C-5944r354955_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 Text (F-5944r354956_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.

Fix Text (F-5944r354956_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.