From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Tanen" Subject: [IP ?] what ip must be filtered ? Date: Thu, 11 Dec 2003 09:58:16 +0100 Sender: netfilter-admin@lists.netfilter.org Message-ID: <00d701c3bfc4$eabdac20$02fea8c0@ALESK> Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Return-path: Errors-To: netfilter-admin@lists.netfilter.org List-Help: List-Post: List-Subscribe: , List-Id: List-Unsubscribe: , List-Archive: Content-Type: text/plain; charset="us-ascii" To: netfilter@lists.netfilter.org Hello, I'm confused, i try to set up my Firewall, with iptables sure :) The problem, an easy problem to solve for you, but a big for me, it's = the next : I have an Dedicated server, Linux, on an internal local network, who = have as ip 192.168.0.1, and other puters have 192.168.0.2 *.3 *.4 etc ... BUT = the dedicated box, use the reuters of my connection to be connected to = internet. This reuters have as ip 192.168.0.100, and my external ip have as ip 63.*.*.*, my problem is to know, WHAT ip i must filter, to prevent of = any attack or hack, the reuters is forwarding the needed port (http, pop/imap/smpt) to the dedicated box. All work fine sure. But what IP i = must filtered, and authorised for have my firewall working fine ? actualy = when i'm filtering my local ip, or my external ip, my mail server, isn't = getting any mail from www, someone can help me please ? Thanks you.