"Iptables Tutorial 1.2.2" - читать интересную книгу автора (Andreasson Oskar)

Prerequisites

This document requires some previous knowledge about Linux/Unix, shell scripting, as well as how to compile your own kernel, and some simple knowledge about the kernel internals.

I have tried as much as possible to eradicate all prerequisites needed before fully grasping this document, but to some extent it is simply impossible to not need some previous knowledge.