How can I configure my firewall to access voice chat with MSN messenger 6.2?

How can I configure my firewall to access voice chat with MSN messenger 6.2?

[MagicWind]

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I have a linux server which is configured as a router connecting my internal network and the internet.  using the following iptables rules:

iptables -A FORWARD -i eth0 -o eth1 -m state --state ESTABLISHED,RELATED -j ACCEPT
iptables -A FORWARD -i eth1 -o eth0 -j ACCEPT
iptables -A FORWARD -j LOG
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

where eth0 is the netword adapter linking to the internet and the eth1 is the adapter linking to the internal network.
It seems the network works quite well, except for the voice connection of MSN messenger 6.2.  I can't either initial a voice chat or accept a voice chat.

I've got absolutely no idea how to make it work.  Any ideas?

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How can I configure my firewall to access voice chat with MSN messenger 6.2?

[MagicWind]

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I have a linux server which is configured as a router connecting my internal network and the internet.  using the following iptables rules:

iptables -A FORWARD -i eth0 -o eth1 -m state --state ESTABLISHED,RELATED -j ACCEPT
iptables -A FORWARD -i eth1 -o eth0 -j ACCEPT
iptables -A FORWARD -j LOG
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

where eth0 is the netword adapter linking to the internet and the eth1 is the adapter linking to the internal network.
It seems the network works quite well, except for the voice connection of MSN messenger 6.2.  I can't either initial a voice chat or accept a voice chat.

I've got absolutely no idea how to make it work.  Any ideas?

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Re: How can I configure my firewall to access voice chat with MSN messenger 6.2?

[Alejandro Cabrera Obed]

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I think you have to install the H.323 module in order to establish voice over IP communications.

See here: http://roeder.goe.net/~koepi/newnat.html

And then you must to set your firewalls rules according to RTP ports.

Greetings

Alejandro
  ----- Original Message ----- 
  From: MagicWind 
  To: netfilter@lists.netfilter.org 
  Sent: Wednesday, August 04, 2004 12:09 PM
  Subject: How can I configure my firewall to access voice chat with MSN messenger 6.2?


  I have a linux server which is configured as a router connecting my internal network and the internet.  using the following iptables rules:

  iptables -A FORWARD -i eth0 -o eth1 -m state --state ESTABLISHED,RELATED -j ACCEPT
  iptables -A FORWARD -i eth1 -o eth0 -j ACCEPT
  iptables -A FORWARD -j LOG
  iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

  where eth0 is the netword adapter linking to the internet and the eth1 is the adapter linking to the internal network.
  It seems the network works quite well, except for the voice connection of MSN messenger 6.2.  I can't either initial a voice chat or accept a voice chat.

  I've got absolutely no idea how to make it work.  Any ideas?

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Re: How can I configure my firewall to access voice chat with MSN messenger 6.2?

[Alejandro Flores]

	Hello there,

	Voice/video on MSN doesn't work behind firewall/nat. The negotiation of
the void/video connection is done in the payload of the packet.
	Take a look at linux-igd:
	http://linux-igd.sourceforge.net/
	It's working for me.

Regards,
Alejandro Flores

> I have a linux server which is configured as a router connecting my
> internal network and the internet.  using the following iptables
> rules:
>  
> iptables -A FORWARD -i eth0 -o eth1 -m state --state
> ESTABLISHED,RELATED -j ACCEPT
> iptables -A FORWARD -i eth1 -o eth0 -j ACCEPT
> iptables -A FORWARD -j LOG
> iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
>  
> where eth0 is the netword adapter linking to the internet and the eth1
> is the adapter linking to the internal network.
> It seems the network works quite well, except for the voice connection
> of MSN messenger 6.2.  I can't either initial a voice chat or accept a
> voice chat.
>  
> I've got absolutely no idea how to make it work.  Any ideas?
>