From mboxrd@z Thu Jan  1 00:00:00 1970
From: Pascal Hambourg <pascal.mail@plouf.fr.eu.org>
Subject: Re: Setup of different types of NAT
Date: Thu, 19 Apr 2007 21:49:19 +0200
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To: Mail List - Netfilter <netfilter@lists.netfilter.org>

Hello,

Pedro Gon=E7alves a =E9crit :
>=20
> I want to know *how to* setup this types of NAT:
> /-Full Cone NAT/
> /-Restricted Cone NAT/
> /-Port Restricted Cone NAT/
> /-Symmetric NAT/

Again ? I thought I already answered the last time you asked.

> Using iptables, I set all policies to "ACCEPT" and I was able to setup=20
> two kinds of NAT:
> (192.168.2.170 is my "public" address and 10.0.0.1 is my "private" addr=
ess
[...]
> /-"Port Restricted Cone NAT", with just a single rule:/
> iptables -t nat -A POSTROUTING -o eth0 -j SNAT --to-source 192.168.2.17=
0/

This is "symmetric NAT", not "restricted cone NAT".

> Now does anyone know how to setup Restricted Cone NAT and Symmetric NAT=
?

AFAIK, you cannot do "restricted cone NAT" nor "port restricted cone=20
NAT" with the stock Netfilter/iptables. It would require dedicated=20
conntrack and NAT helper modules.