Hi All,

I got advised of this Free Firewall (although for a corporate solution it does cost some $'s), and at a glance, it seems pretty damn good.

http://www.smoothwall.org/

..it was designed to produce a hardened internet firewall device, turning a server, workstation or reduntant PC into a replacement for a hardware firewall router often costing several thousands of dollars.
take this product and shove it under the noses of the security vendors charging huge amounts of money for providing lesser product.