All Direct Access traffic must be routed through the internal network.

From Windows Server 2012/2012 R2 Domain Controller Security Technical Implementation Guide

Part of Direct Access – Route Through Internal Network

Associated with: CCI-000366

SV-53183r1_rule All Direct Access traffic must be routed through the internal network.

Vulnerability discussion

Routing all Direct Access traffic through the internal network allows monitoring and prevents split tunneling.

Check content

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\TCPIP\v6Transition\ Value Name: Force_Tunneling Type: REG_SZ Value: Enabled

Fix text

Configure the policy value for Computer Configuration -> Administrative Templates -> Network -> Network Connections -> "Route all traffic through the internal network" to "Enabled: Enabled State".

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