[Asterisk-Users] NAT Far End Traversal

[dbakkerlist at arrayasolutions.com]

The IAX protocol gets around all NATn? I was thinking of using ser. Do you 
run it on the same box? Can you share you ser.cfg?




Yair Hakak <yhakak at gmail.com> 
Sent by: asterisk-users-bounces at lists.digium.com
03/08/2005 09:00 AM
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Subject
Re: [Asterisk-Users] NAT Far End Traversal






Hello,
 i'm using ser+nathelper+rtpproxy in front of asterisk. It has been
terrific. The only problem i have is with some DSL modems that grab
port 5060 for themselves (why, i don't know, it's very annoying but
easily solvable). Other than that, no issues at all, in the NAT, in
the DMZ, between the modem and the router, all good.

You can also look into ser+stun in front of asterisk.

Or, you could just use IAX :-)


-yair



On Tue, 08 Mar 2005 17:49:36 +0400, Jean-Michel Hiver
<hiver.j at wanadoo.fr> wrote:
> Hi List,
> 
> After some research, it seems the only reasonable thing to do in order
> to get SIP phones behind NAT working reasonably well without fiddling
> with the DSL router is to have some kind of far end nat traversal 
mechanism.
> 
> Is there any way to do this with open source tools? I've seen somewhere
> that far end nat traversal can be achieved with SER + nathelper does the
> job... has anybody gotten this working  in conjunction with Asterisk?
> 
> Another question... Are you aware of a SIP ATA or phone that has some
> kind of VPN (i.e. PPTP) client embedded in? This would make the NAT
> problem go away nicely and provide added security...
> 
> Cheers,
> Jean-Michel.
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