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

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-63573	WN10-CC-000045	SV-78063r1_rule		Medium

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

STIG	Date
Windows 10 Security Technical Implementation Guide	2016-06-24

Details

Check Text ( C-64323r1_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 Value Type: REG_SZ Value: Enabled

Fix Text (F-69503r1_fix)
Configure the policy value for Computer Configuration >> Administrative Templates >> Network >> Network Connections >> "Route all traffic through the internal network" to "Enabled: Enabled State".