Title

The Responder network protocol driver must be disabled. (Cat II impact)

Discussion

The Responder network protocol driver allows a computer to be discovered and located on a network. Disabling this helps protect the system from potentially being discovered and connected to by unauthorized devices.

Check Content

If the following registry values do not exist or are not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Microsoft\Windows\LLTD\ Value Name: AllowRspndrOndomain Value Name: AllowRspndrOnPublicNet Value Name: EnableRspndr Value Name: ProhibitRspndrOnPrivateNet Type: REG_DWORD Value: 0

Fix Text

Configure the policy value for Computer Configuration -> Administrative Templates -> Network -> Link-Layer Topology Discovery -> "Turn on Responder (RSPNDR) driver" to "Disabled".

Additional Identifiers

Rule ID: SV-225315r569185_rule

Vulnerability ID: V-225315

Group Title: SRG-OS-000095-GPOS-00049

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.