From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nils Ohlmeier <lists@ohlmeier.de>
Subject: Re: conntrack manipulation
Date: Tue, 13 May 2003 15:52:44 +0200
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To: "Ian Latter" <Ian.Latter@mq.edu.au>
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Hi Ian,

On Tuesday 13 May 2003 01:35, Ian Latter wrote:
>   How, then, does  this differ from either the FTP conntrack+nat
> module?  Surely you just want to right a small connection tracker
> that understands your phone protocol and relays connections
> appropriately?

SIP differ in a lot points from FTP:
- it uses normaly UDP not TCP (although TCP is possible according to the 
newset RFC3261)
- it needs more then one related connection (ok thats not a problem any more)
- its a ASCII based protocol related with http
- it can contain hostnames instead of IP <- and thats the reason why it exist 
no conntrack helper and i do/will not write such a module

Regards
  Nils Ohlmeier