[asterisk-users] sip forward behind a nat

[Vicky]

One more thing i would like to point out is that softphones like sjphone use
some freeware stun server to detect nat on network (as a client ) .
Asterisk ( as client ) cannot use external stun server to detect nat type
automatically so i think thats why it isnt able to make calls while
softphone works . Port forwarding should help here .Also edit sip_nat.conf
after port forwarding but it will be a burden to setup if
asterisk is on dynamic ip  .

On 14/11/06, nik600 <nik600 at gmail.com> wrote:
>
> On 11/13/06, Vicky <vicky.r at gmail.com> wrote:
> > IF your asterisk server is behind NAT and no port forwarding is done
> then
> > how can that static ip user/device reach it . You will have to
> > keep asterisk server in static ip or do
> > port forwarding to accept connections from
> > outside .
> i've understand but my Asterisk server doesn't have to accept calls,
> it only have to make a call
>
> > OR maybe i didnt understand senario properly here . Is
> > it like your "Server with SIP application (public_address)"
> > responds to sip calls made by any program ( like sjphone pc-pc sip ) .
> exaclty, infact if i use sjphone from an adsl connection (using a
> modem) with sjphone i can make a call to the server with SIP
> application
>
>
> > thats case then asterisk should be able to call it like any other
> program or
> > maybe theres nat scenario playing bad here :-/ . Can you port forward
> from
> > firewall to asterisk server  ??
> I can port forward from firewall to server, but i'd like to maintain
> the server not accessible from internet.
>
> I'll check some NAT configuration, many thanks to your reply.
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