Learn the basics of the Linux operating system, beginning with some historical information, followed by an installation tutorial, configuration tips and much more.

Set up your own mail server (SMTP), using the sendmail mail transfer agent, fetchmail and procmail to handle all incoming and outgoing mail traffic, as well as your internet email account.

Learn Linux online by performing hands-on exercises on servers in the company's Internet Lab. Courses developed by experienced Linux professionals. View a sample course before registering.

This tutorial is provided for people with no Linux experience. It covers basics, such as connecting, working with files and directories, changing a password and using 'man'.

Step-by-step guide pages walk you through installing the Linux OS and setting up Internet, LAN, proxy, and firewall servers along with introductory tutorials on the Linux OS, networking, and server security.

The web is all about usability, consistency and speed... well, that's what we'd like to think anyway. In this article John shows us how to stop those dreaded 404 errors from plaguing our Apach-based web sites. With a bit of PHP and a htaccess file or two, your site will be free of 404's forever!

If you have a web site that contains sensitive documents such as test results, scripts, or an administration section, then you need directory security to stop unauthorized people from accessing certain parts of your site. In this article, Hassan will show you how to setup htaccess security for folders on your Apache web server.

TCP/IP is a protocol that's used to transmit data through a network. In this article Steve takes a look at exactly what the TCP/IP protocol is, the purpose of TCP/IP as a protocol, TCP/IP's efficiency, various LAN architectures, hacking and more.

This document briefly describes the Linux filesystem structure, Linux configuration files, how they are used, and Linux commands and programs used for various functions on the system

This document describes how Linux boots and loads up through user login and more. It is very useful when debugging system problems.

This guide explains basic commands, file structure, file permissions, how to get help, how to work with file systems, networking, samba, and much more.

This paper will explain you how an executed program is mapped in memory. Every steps are explained, from shell command line to the stack and heap layout.

Paul gives all the gory details about the what and why of firewalls, then shows you how to build one of your very own.(Webmonkey)

Learn by doing- UNIX & Linux tutorial for beginners. This is a practical tutorial designed for beginners to learn Linux or UNIX quickly by actually using the UNIX shell.

Learn about this popular Unix OS for PC hardware. Includes a very large list of Linux Resources.

Which server is better, the rebel base or the Death Star? Paul talked with some luminaries from the top Web sites to get their opinions. (Webmonkey)

Think you need cash and skill to set up a Web server with Linux and Apache? You don't. All you need is this article. (Webmonkey)