Title

All Direct Access traffic must be routed through the internal network. (Cat III impact)

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 Registry Path: \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".

Additional Identifiers

Rule ID: SV-225319r569185_rule

Vulnerability ID: V-225319

Group Title: SRG-OS-000480-GPOS-00227

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.