"We've looked at a Yoggie firewall product before, in Linux
Format magazine issue 95. The Yoggie can stop viruses before they
get to your machine, enforce black-or whitelist site filtering, and
block ports in the normal firewall way. They've been used to
protect innocent users everywhere, and we found the original device
to be an extremely effective solution.
"The only problem was that the platform was closed, and this is
where the Open Firewall version steps into the breach. It's a
special version of the Yoggie that comes with an SDK for developers
and a back-door SSH server. The idea is that Linux experts can warp
the Yoggie into their own security solution platform."