Guide to IP Layer Network Administration with Linux
by Martin A. Brown
This guide provides an overview of many of the tools available for IP network administration of the linux operating system, kernels in the 2.2 and 2.4 series. It covers Ethernet, ARP, IP routing, NAT, and other topics central to the management of IP networks.
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by Jeff Dike - Prentice Hall
With User Mode Linux you can create virtual Linux machines within a Linux computer and use them to safely test applications, network services, and even kernels. You can try out new distributions, experiment with buggy software, and test security.
by Kurt Seifried - Linuxtopia
The guide introduces computer security, Linux installation, physical and console security, administration, backup, file security, authentication, logging, attack detection, firewalling, network security, software management, encryption, viruses, etc.
by Oskar Andreasson - Linuxtopia
This document gives a good and simple primer at how to get started with iptables. The text requires some previous knowledge about Linux/Unix, shell scripting, as well as how to compile your own kernel, and some knowledge about the kernel internals.
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.