Starting points of a secure Linux system
Source: Help Net Security
Here we go again. After some time has passed, I decided to write
another article concerning some overall security aspects of installing
and running linux, and as you can see it's connected to the very first
one 'Securing a default linux installation' and makes a good reading companion to it. To keep it short and simple, here are some good pointers to enhancing your system's security. But remember, there's no absolute security, so keep your eyes open, subscribe yourself to good sec-related mailing lists, and keep your software up-to-date.