Route all Direct Access traffic through internal network.

From Windows 7 Security Technical Implementation Guide

Part of Direct Access – Route Through Internal Network

Associated with IA controls: ECSC-1

SV-25287r1_rule Route all Direct Access traffic through 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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