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

From Windows Server 2008 R2 Domain Controller Security Technical Implementation Guide

Part of Direct Access – Route Through Internal Network

Associated with IA controls: ECSC-1

SV-32452r1_rule All Direct Access traffic will be routed through the internal network.

Vulnerability discussion

This setting ensures all traffic is routed through the internal network, allowing monitoring and preventing split tunneling.

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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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