5.14 Ensure 'Peer Name Resolution Protocol (PNRPsvc)' is set to 'Disabled'

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Information

Enables serverless peer name resolution over the Internet using the Peer Name Resolution Protocol (PNRP).

The recommended state for this setting is: Disabled.

Rationale:

Peer Name Resolution Protocol is a distributed and (mostly) serverless way to handle name resolution of clients with each other. In a high security environment, it is more secure to rely on centralized name resolution methods maintained by authorized staff.

Impact:

Some peer-to-peer and collaborative applications, such as Remote Assistance, may not function.

Solution

To establish the recommended configuration via GP, set the following UI path to: Disabled.

Computer Configuration\Policies\Windows Settings\Security Settings\System Services\Peer Name Resolution Protocol

Default Value:

Manual

See Also

https://workbench.cisecurity.org/files/4063