[Asterisk-Users] Known SIP - NAT Solutions?

[Wade Weppler]

I've just been getting into this as well, and I've run into the same
problem.

It looks like the only solutions so far are to use a SIP client that
supports STUN (the SNOM 100 supports this), or that supports UPnP (with a
NAT router that supports UPnP).  For Linux NAT routers, there's an ip_masq
module for 2.2 Kernels called ip_masq_sip that's supposed to do the trick.
I'm in the process of trying this masq module to see if it works.

If the Asterisk server itself is behind a NAT router, then that's a whole
new problem.

-wade


> -----Original Message-----
> From: asterisk-users-admin at lists.digium.com [mailto:asterisk-users-
> admin at lists.digium.com] On Behalf Of Matthew Farley
> Sent: Wednesday, March 05, 2003 4:08 PM
> To: asterisk-users at lists.digium.com
> Subject: [Asterisk-Users] Known SIP - NAT Solutions?
> 
>      I have recently begun experimenting with Asterisk, and have been
> mightily impressed by its capabilities and flexibility. I have run
> across one problem, however, that challenges my ability to use it as a
> production system.
> 
>      My Asterisk box has a public Internet IP, and works great with SIP
> (ATA 186) clients that also have public IP addresses. Unfortunately,
> most of the locations that I would like to put these SIP phones into are
> behind NAT. Calls placed from behind NAT are consistantly unsuccessful.
> I have read in several places that there are software solutions to this
> problem, though I have found no specific references to precisely what
> software to use, or how it should be configured to hand these calls off
> to Asterisk.
> 
>      Has anyone on the list successfully overcome this limitation? If
> so, any advice you might be able to provide would be greatly
> appreciated.
> 
> Thanks!
> 
> Sincerely,
> Matthew Farley
> asterisk at wheatstate.net
> 
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