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

From Windows 8/8.1 Security Technical Implementation Guide

Part of Direct Access – Route Through Internal Network

Associated with IA controls: ECSC-1

Associated with: CCI-000366

SV-48443r2_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 Subkey: \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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