Linux Security HOWTO by K. Fenzi, D. Wreski
Publisher: Linuxtopia 2004
This document covers some of the main issues that affect Linux security. General philosophy and net-born resources are discussed. This document is not meant to be a up-to-date exploits document. It will tell you where to look for such up-to-date information, and will give some general methods to prevent such exploits from taking place.
Computers & Internet Operating Systems Linux Administration