I'm not sure where to put this, (Firewall&honeypot, network security, etc.) so it landed here. If I'm wrong, I'm sure Negative or MsMittens will correct me. I didn't post this in the tutorial forum cuz I didn't write it.
The pdf file below is WatchGuard's "Better Security: A Practical Guide"
Good reading, and it prints out in a nice hard copy if you like to keep printed resources. I know I do.