Frame Diverter is mainly used for setting up a bridge with Squid running on it and transparently caching Web traffic between the LAN and the router.
It's beeing extended to allow forwarding frames to other machines. It also allows layer 3+ switching
...The blockpage requires use of the PHP 5.4.x CLI. In order to do HTTPS filtering, you must first install squid compiled with SSL support and configure it to talk to archangel.