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Unauthenticated RPC clients must be restricted from connecting to the RPC server.


Overview

Finding ID Version Rule ID IA Controls Severity
V-220824 WN10-CC-000165 SV-220824r569187_rule Medium
Description
Configuring RPC to restrict unauthenticated RPC clients from connecting to the RPC server will prevent anonymous connections.
STIG Date
Microsoft Windows 10 Security Technical Implementation Guide 2022-04-08

Details

Check Text ( C-22539r554957_chk )
If the following registry value does not exist or is not configured as specified, this is a finding:

Registry Hive: HKEY_LOCAL_MACHINE
Registry Path: \SOFTWARE\Policies\Microsoft\Windows NT\Rpc\

Value Name: RestrictRemoteClients

Value Type: REG_DWORD
Value: 1
Fix Text (F-22528r554958_fix)
Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Remote Procedure Call >> "Restrict Unauthenticated RPC clients" to "Enabled" and "Authenticated".