On the HTTP proxy, only one parent server can be specified.
Because this product connects to the specified parent server based on the IP address, there is no problem on host-based Virtual Host. In this case, you can specify the web server's IP address as the parent server.
On IP-based Virtual Host, you can use transparent mode. You can also install multiple instances of this product on the same machine for each web server.
For more information about Apache's Virtual Host configuration, see the Apache Virtual Host documentation at