UNIX for Dummies Questions & Answers

Hello, I'm trying to find a Unix documentation about security! I mean I nead something very complex and complete, not just a document about kerberos, a document about securing against atack ... or others like those. I woulde like if exists, a documentation based on levels of security and expanding them on and on till a final point. I'm in a hurry, cause I need this documentation till tomorrow, and that's way I didn't looked very well over the other posts. I will remain deeply grateful for any information.

Search the Internet for UNIX security.

Some hits include:
network security
unixtools - security
cert.org - security