Ok, so I was replaying the game, capturing footage. One of the servers needed FIREWALL.EXE, so I downloaded that program onto the floppy disk. After realizing that I forgot to get the floppy (a personal problem, for me), I put it into the server computer and...
there's nothing on it. Sure, the data is on it, but it seems like the firewall program got wiped out from existence!
So, anyways, that's how to recreate the bug.