You can set up the 10g Webgate and register plug-ins as Web filters.
Task overview: Configuring Webgate and Filters for TMG Server includes
When you install Webgate with the Forefront TMG Server, the destination for the ISAPI Webgate installation (also known as the Webgate_install_dir) should be same as that of the Microsoft Forefront TMG.
For example, if Forefront TMG is installed in
C:\Program Files\Microsoft Forefront Threat Management Gateway, the ISAPI Webgate should also be installed there.
Task overview: Installing the ISAPI Webgate for Forefront TMG Server
During Webgate installation, select the TMG option.
After finishing ISAPI Webgate installation and configuration for the Forefront TMG Server, you must change permissions to the
This subdirectory was created in the Forefront TMG Server (also Webgate) installation directory. You must add the user NETWORK SERVICE and grant full control to SYSTEM ADMINISTRATOR. This enables the Forefront TMG Server to establish a connection between the Webgate and Access Server. Certain configuration files should be readable by system administrators, which is why you grant SYSTEM ADMINISTRATOR full control.
Webgate in Simple Mode: add user NETWORK SERVICE and give Full Control for the
password.xml file in TMG_install_dir
To change permissions for the \access subdirectory
\access, and select Properties.