[asterisk-users] Asterisk + Phones behind different Nat Firewalls

Danny Dias ing.diasdanny at gmail.com
Thu Apr 26 12:47:28 CDT 2012

I cant put public ip adress to the asterisk server.

The main problem i see is with the sip headers (contact, sdp ip and ports,
etc)...with the result of one way audio or no registrstion at all. Does an
STUN server should works?
AGAIN: phones in one site behind nat and PBX in another site also behind nat
El 26/04/2012 19:31, "Carlos Alvarez" <carlos at televolve.com> escribió:

> On Thu, Apr 26, 2012 at 9:54 AM, Danny Dias <ing.diasdanny at gmail.com>wrote:
>> I have a doubt (basic i guess, but not for me). I have an escenario where
>> customer site has Asterisk PBX behind Nat/firewall with private IP address
>> and sone phones also; BUT there are some other phones on different sites
>> and of course behind its nat/firewalls; with IAX i have no problem, but
>> customer wants to use SIP phones and there is no way to put IP public
>> address for the Asterisk Server.
> When you say you can't give the server a public IP, do you mean you can't
> put it outside of NAT, or you can't use a public IP at all?  With most
> routers, NAT from a public IP to a private one for the server works just
> fine.  I've used Cisco, Juniper, and Sonicwall in front of an Asterisk
> server, NAT IP, and SIP with no problems.
> --
> Carlos Alvarez
> TelEvolve
> 602-889-3003
> --
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