[asterisk-users] SPA-2102 sending local IP instead of WAN IP in SIP packets

[bruce bruce]

Thanks for the feedback.

I said previously, Asterisk receives packets like extension at 192.168.0.10 is
trying to register to it. So, Asterisk sends out to local LAN an ACK which
obviously is not right. SPA-2102 should send SIP request like
extension at 123.123.123.123 (public IP).

Thanks

On Fri, Oct 8, 2010 at 3:32 PM, Kevin P. Fleming <kpfleming at digium.com>wrote:

> On 10/06/2010 02:50 PM, bruce bruce wrote:
> > Hi Guys,
> >
> > This is such an annoying issue whenever it comes up. The sender and
> > receive always receive the source public IP no matter what in the IP
> > packets but then SIP packets go out with something like 192.168.0.20.
> >
> > In this instance, a Bell Canada DSL modem is installed and I saw the
> > SPA-2102 register properly but only to fail later on due to sending it's
> > LAN IP to the Asterisk server.
> >
> > So, I put NAT=yes and NAT_ALIVE=yes but that didn't help at all. I also
> > put the device on DMZ in the Bell Canada DSL modem and still the same
> issue.
> >
> > I am wondering when would manufacturers finally fully comply the SIP
> RFC?!
>
> Exactly how is this behavior non-compliant with "the" (sic) SIP RFC?
> There is nothing in any SIP RFC that mandates that a SIP UA must be
> aware of multiple IP addresses over which it can be reached, and select
> the proper one to include in SIP requests and responses.
>
> In fact, many SIP UAs, Asterisk included, work just fine behind NAT
> devices without ever knowing what their external IP addresses are.
>
> If you had actually described how the device failed, we might be able to
> tell you what you could do to resolve the problem. In general, Asterisk
> works just fine with endpoints that are behind NAT devices and never
> send their external IP addresses in their SIP messages... there are
> probably millions of devices working that way every day.
>
> --
> Kevin P. Fleming
> Digium, Inc. | Director of Software Technologies
> 445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
> skype: kpfleming | jabber: kfleming at digium.com
> Check us out at www.digium.com & www.asterisk.org
>
> --
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