Free Ebook: Securing & Optimizing Linux: The Hacking Solution (v.3.0) . A comprehensive collection of Linux security products and explanations in the most simple and structured manner on how to safely and easily configure and run many popular Linux-based applications and services.
This 800+ page eBook is intended for a technical audience and system administrators who manage Linux servers, but it also includes material for home users and others.
It discusses how to install and setup a Linux server with all the necessary security and optimization for a high performance Linux specific machine.
It can also be applied with some minor changes to other Linux variants without difficulty.