Re: [Ekiga-list] NAT issues with VoIP clients



> Date: Wed, 17 Mar 2010 17:00:06 +0100
> From: Eugen Dedu <Eugen Dedu pu-pm univ-fcomte fr>
> Message-ID: <4BA0FC86 1070601 pu-pm univ-fcomte fr>
>
> Given the recent posts (and others), I have just written a page
> http://wiki.ekiga.org/index.php/Understanding_NAT/firewall_issues_with_SIP_clients_%28eg_ekiga%29
> explaining the problems of VoIP clients with NATs. I am not 100% sure
> of what I wrote, and it remain open questions. Please help to improve
> it by making remarks/improving it.

The Ekiga wiki is broken.  It runs me in circles when I try to register, so I can't add to the discussion.  (Don't bother to fix it for me.  I don't really want to start contributing to the wiki anyway.)  But since I can't add a comment, I'll post it here.


The article says, "For that, before registering, A and B must discover their public IP addresses (corresponding to NATA and NATB respectively) and send it to ekiga.net, so that they can be contacted afterwards (*TODO why ekiga.net cannot simply use ip/port from ip packet header?*)".

Indeed, this requires explanation.  This is surely the job of the SIP server.  I certainly do not need a separate STUN server to use a Web browser.  The Web site has no trouble determining my external IP address.


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