Quote Originally Posted by jockey0109
Hmmmm.... well, haven't tried out many of them personally. however What about the hardware firewall? Do they cost a lot and how much can we modify them? Actually, i think that id the firewall is hardware based, there might not be too much customizable.

And what about the firewalls that could run on the Linux?
You can turn an old machine with two NIC cards, a floppy disk drive (and disk) with no hard drive into a "hardware" firewall. There are a bunch of different ways to strip down Linux to make it work. Here's one example:

http://www.jimweller.net/jims/lfw/