Fwd: [apnews] Iptables Tutorial
Para el que solicitó un documento sobre iptables.
--- The Avenger GNU <hgayosso@yahoo.com> a écrit : > À: apnews@yahoogroups.com
> De: The Avenger GNU <hgayosso@yahoo.com>
> Date: 31 May 2001 23:14:42 -0400
> Répondre à: apnews-owner@yahoogroups.com
> Objet: [apnews] Iptables Tutorial
>
> http://www.linuxsecurity.com/articles/firewalls_article-3098.html
>
> Iptables Tutorial Pinehead.com Posted By: Chris Pallack 5/31/2001
> 13:17
>
> I'm sure many of you have been wondering how to use iptables to set up
> a basic firewall. I was wondering the same thing for a long time until
> I recently figured it out. I'll try to explain the basics to at least
> get you started.
>
> First you need to know how the firewall treats packets leaving,
> entering, or passing through your computer. Basically there is a chain
> for each of these. Any packet entering your computer goes through the
> INPUT chain. Any packet that your computer sends out to the network
> goes through the OUTPUT chain. Any packet that your computer picks up
> on one network and sends to another goes through the FORWARD
> chain. The chains are half of the logic behind iptables themselves.
>
> Now the way that iptables works is that you set up certain rules in
> each of these chains that decide what happens to packets of data that
> pass through them. For instance, if your computer was to send out a
> packet to www.yahoo.com to request an HTML page, it would first pass
> through the OUTPUT chain. The kernel would look through the rules in
> the chain and see if any of them match. The first one that matches
> will decide the outcome of that packet. If none of the rules match,
> then the policy of the whole chain will be the final decision
> maker. Then whatever reply Yahoo! sent back would pass through the
> INPUT chain. It's no more complicated than that.
>
> --
>
> To Post a message, send it to: apnews@eGroups.com
>
> To Unsubscribe, send a blank message to: apnews-unsubscribe@eGroups.com
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
=====
---------
| | | Cronos
| | | "No confies en nadie mayor de treinta"
| ----|
| | Email: cronos1_mx@yahoo.com
| | WWW: http://www.geocities.com/cronos1_mx/
---------
___________________________________________________________
Do You Yahoo!? -- Vos albums photos en ligne,
Yahoo! Photos : http://fr.photos.yahoo.com
Reply to: