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.
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by Steve Frampton
This documentation will attempt to summarize the installation and configuration, as well as the day-to-day administrative and maintenance procedures that should be followed to keep a Linux-based server or desktop system up and running.
by Alan Schwartz - O'Reilly Media
The only published resource devoted to SpamAssassin and how to integrate it effectively into your networks. This clear, concise guide clarifies the installation, configuration, and use of the SpamAssassin spam-checking system.
by John H. Terpstra, Jelmer R. Vernooij - Prentice Hall
The definitive guide to using Samba-3 in production environments. It begins with the immense amount of HOWTO information published by the Samba Team. The material is organized and edited around the practical needs of working Windows administrators.
by Lars Wirzenius, at al.
The Linux System Administrator's Guide, describes the system administration aspects of using Linux. It is intended for people who know next to nothing about system administration, but who have already mastered at least the basics of normal usage.