These are my links for 25 gen 2011 through 26 gen 2011:

• Tricks with ‘sqsh’ – sqsh is -if you didn't know already- a superior replacement for Sybase's default ASCII query tool isql (sqsh has been described as 'isql the way it should have been').[…]
• Grsecurity – Wikibooks, open books for an open world – […] grsecurity is a set of patches for the Linux kernel with an emphasis on enhancing security. It allows the system administrator to, among other things, define a least privilege policy for the system, in which every process and user have only the lowest privileges needed to function.This book is intended as a comprehensive up-to-date user guide about setting up and administrating a grsecurity-enabled system[…]
• Hardening The Linux Kernel With Grsecurity (Debian … – […] This howto was performed on a Debian Lenny system. Thus some tools are Debian specific. However, tasks can be performed with other distro specific tools or even with universal tools (make).<br />
  Everything will done with root privileges. However, you can perform them with a limited account thanks to sudo and fake-kpkg tools[…]