SIP ALG and netfilter

SIP ALG and netfilter

[Siddhartha Gavirneni]

Hi,
  I am new to this list, and I am here because I would
like to develop a SIP ALG for netfilter. And for this
purpose, I need help from you guys.

Firstly, I tried searching for the SNMP ALG's source
code, but could not find it. I would like to use that
to understand the ALG approach for netfilter.

Second, is there anyone else working on this? If yes,
who is it, and can I contact those developers?

Thank you,
Siddharth.

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Re: SIP ALG and netfilter

[Harald Welte]

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On Thu, Jan 22, 2004 at 01:22:58PM -0800, Siddhartha Gavirneni wrote:
> Hi,
>   I am new to this list, and I am here because I would
> like to develop a SIP ALG for netfilter. And for this
> purpose, I need help from you guys.

Great.  I suppose you are talking about free software development?
 
> Firstly, I tried searching for the SNMP ALG's source
> code, but could not find it. I would like to use that
> to understand the ALG approach for netfilter.

ip_nat_snmp.c

SNMP might not be the best example, since it only is a NAT helper, but
no conntrack helper.  Please look for ip_{conntrack,nat}_ftp.c for an
easy example... and ip_{conntrack,nat}_h323.c for a more sophisticated
one.

> Second, is there anyone else working on this? If yes,
> who is it, and can I contact those developers?

Please talk to Nikolai Dahlem <listuser@epygi.de>, he was working on
such a solution. 

> Thank you,
> Siddharth.

-- 
- Harald Welte <laforge@netfilter.org>             http://www.netfilter.org/
============================================================================
  "Fragmentation is like classful addressing -- an interesting early
   architectural error that shows how much experimentation was going
   on while IP was being designed."                    -- Paul Vixie

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