[asterisk-users] Maybe a NAT problem

[Facundo Barrera - GMail]

007/1/4, Bob Chiodini <bchiodini at gmail.com>:
> Facundo Barrera - GMail wrote:
> > Hi list:
> >         This is my first post and first off all i want to wish a good
> > year for everone! well my problem is; i already installed asterisk on
> > a server and created a channel and a couple of extensions, all seems
> > to work just fine, y can make calls and receive them, i'm using the
> > x-lite client that also works very good, this is the topology of the
> > net
> >
> >
> > (LAN - some clients) --------|| Internal interface-private IP(server
> > Running Asterisk)external interface-public IP ||---------INTERNET
> >
> > Well i configure * to bind all address, so it's service listen on the
> > two interfaces, when i make a call from a client inside my LAN to a
> > client on the INTERNET, the person receives the call and listen me
> > perfectly, but i can't listen any audio from him, i read about the
> > issue and it seems to be a problem of nating, keep in mind that this
> > server is masquerading all my LAN ips, so i can share my internet
> > conenction, so when i receive a call form the outside world in fact
> > x-lite shows me that the call originate from my inside interface IP of
> > the server, but this is the strange thing the packets that originate
> > the call from the outside world arrive just fine but when i answer the
> > call i can't hear any audio at all.
> >
> > Any ideas how to solute this? hope not receive too much flames of this
> > common issue
> >
> > Thanks a lot
> >
> >
> In your SIP configs specify that the extensions are natted:
>
> nat=yes
> externhost=<External IP address>
> localnet=<Local IP subnet>/<local subnet mask>
>
> These are global settings.
>
> It might also be helpful to set canreinvite=no for each extension.
>
> There are probably firewall tricks you can do as well, but its early and
> I'm a couple cups of coffee shy.
>
> Bob...
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Thanks for the answer, will try that, but keep in mind that my server
don't have an static public address, i use a dynamic DNS to resolve my
sip domain.

Thanks a lot

-- 
_________________________
   Facundo Agustin Barrera
  --------------------------------------
     www.openlabs.com.ar
"Let the penguins do the work"
---------------------------------------------
   Buenos Aires - Argentina
_________________________