I remember setting up nat/firewall/routers for my office using cast off desktop machines, a linux on a floppy distro, and a couple of 3com network cards. They m

I remember setting up nat/firewall/routers for my office using cast off desktop machines, a linux on a floppy distro, and a couple of 3com network cards. They may have even been 486 machines, since I was taking what I could get. The IT people were impressed with the security of being able to flip the write protect on the floppy. And the speed, once it was running completely from memory. Less so on the process to make a change. At the time, they were running out of ip addresses because every desktop was allocated a public ip.