Link: http://www.linuxtopia.org/Linux_Security_HOWTO/index.html
A reasonable level of computer security is not difficult to maintain on a home machine. More effort is required on business machines, but Linux can indeed be a secure platform. Due to the nature of Linux development, security fixes often come out much faster than they do on commercial operating systems, making Linux an ideal platform when security is a requirement.
This document will attempt to explain some procedures and commonly-used software to help your Linux system be more secure. It is important to discuss some of the basic concepts first, and create a security foundation.
Popularity: 28%
Linux is both more secure and less common than Windows based systems with the consequence that attacks on Linux systems occur less frequently than on Windows systems. Having said that it would be foolish to be complacent about securing any system regardless of whether it runs Windows, Linux or any other operating system.
The purpose of this book is to provide a step by step approach to securing a Linux system from outside attack. It is designed to be used and understood by both new and experienced Linux users.
Link: http://www.linuxtopia.org/LinuxSecurity/index.html
Popularity: 28%
Quick primer on general web site security practices. Written at the level of the business owner who may not know exactly how to implement the items but should be able to find a qualified sysadmin who can.
Link: http://www.pcmag.com/article2/0,4149,11525,00.asp
Popularity: 19%
