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 Subkey: \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-48443r2_rule

Vulnerability ID: V-21961

Group Title: Direct Access – Route Through Internal Network

Expert Comments

CCIs tied to check.

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