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Check: 5.124

Windows Vista STIG: 5.124 (in versions v6 r42 through v6 r41)

Title

Client computers required to authenticate for RPC communication. (Cat II impact)

Discussion

This check verifies that the system is configured to force client computers to provide authentication before an RPC communication is established.

Check Content

If the following registry value doesn’t exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Subkey: \Software\Policies\Microsoft\Windows NT\Rpc\ Value Name: EnableAuthEpResolution Type: REG_DWORD Value: 1

Fix Text

Configure the policy value for Computer Configuration -> Administrative Templates -> System -> Remote Procedure Call “RPC Endpoint Mapper Client Authentication” to “Enabled.

Additional Identifiers

Rule ID: SV-29410r1_rule

Vulnerability ID: V-14254

Group Title: RPC - Endpoint Mapper Authentication

Expert Comments

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CCIs

CCIs tied to check.

Number	Definition
CCI-001967	The information system authenticates organization-defined devices and/or types of devices before establishing a local, remote, and/or network connection using bidirectional authentication that is cryptographically based.

Controls

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

Number	Title
IA-3 (1)	Cryptographic Bidirectional Authentication