Unauthenticated RPC clients must be restricted from connecting to the RPC server.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-253383 | SRG-OS-000379-GPOS-00164 | WN11-CC-000165 | SV-253383r971545_rule | 2026-02-12 | 2 |
Description
Configuring RPC to restrict unauthenticated RPC clients from connecting to the RPC server will prevent anonymous connections.
ℹ️ Check
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
Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Remote Procedure Call >> "Restrict Unauthenticated RPC clients" to "Enabled" and "Authenticated".