First word of the title is Linux; I expected the book to give a narrow vision of all the security aspects. It turned to have a very good top-down analysis of security.

This book first explain that security is not an 0-1 thing but that security is attached to a budget where you try to protect your assets from risks and threats. The book gives two models : standard ALE and Scheiner’s trees. The aim is to estimate what youb should invest and what is worthless.

Then this books focuses on the tools available for a Linux server. Still it underlines rules that you should apply to any system like hardening a system in a DMZ, etc.

I consider it to be my best buy of this year: it got me interested into security whereabouts and made me want to go farther.