Iptables Tutorial 1.2.2

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Chapter 4. Network Address Translation Introduction

NAT is one of the biggestattractions of Linux and Iptables to this day it seems. Instead of using fairly expensive third party solutions such as Cisco PIX etc, a lot of smaller companies and personal users have chosen to go with these solutions instead. One of the main reasons is that it is cheap, and secure. It requires an old computer, a fairly new Linux distribution which you can download for free from the Internet, a spare network card or two and cabling.

This chapter will describe a little bit of the basic theory about NAT, what it can be used for, how it works and what you should think about before starting to work on these subjects.


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