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


Overview

Finding ID Version Rule ID IA Controls Severity
V-21961 WN12-CC-000006 SV-53183r1_rule ECSC-1 Low
Description
Routing all Direct Access traffic through the internal network allows monitoring and prevents split tunneling.
STIG Date
Windows Server 2012 Domain Controller Security Technical Implementation Guide 2014-01-07

Details

Check Text ( C-47489r1_chk )
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 (F-46109r1_fix)
Configure the policy value for Computer Configuration -> Administrative Templates -> Network -> Network Connections -> "Route all traffic through the internal network" to "Enabled: Enabled State".