[asterisk-users] registration process

[unplug]

That's mean, if I have your sip account and password, I can
connect/register to the sip server as you do.
Out-bound call: you and I can make calls
In-bound call:  Only the last one that register to the server will get the call
So there will be a problem as the registration process will initiate
by UA in a regular interval.  Some time, you may register to server
and sometime, I may register to server but you failed.  In such case
when there is in coming call, sometime it will route to you and
sometime it will route to me.  There will be a conflict.

You said there is no way to prevent except to apply IP& port
limitation.  How about to check the above case?

On 7/28/06, Joshua Colp <jcolp at digium.com> wrote:
> ----- Original Message -----
> From: unplug
> [mailto:maillisting at gmail.com]
> To: Asterisk Users Mailing List -
> Non-Commercial Discussion [mailto:asterisk-users at lists.digium.com]
> Sent:
> Fri, 28 Jul 2006 07:35:34 -0300
> Subject: [asterisk-users] registration
> process
>
>
> > Hi all,
> >   I wonder if there are 2 UAs having the same sip account and
> > password.  If they both register to the same server in same time.
> > Both of them can register successfully and make calls.  Am I right?
>
> They can register to the same account yes but only the last one that registered will get calls directed at the account. As for making calls they'll always be able to unless you have an entry setup that just uses the registered IP address/port for authentication (probably not).
>
> > How can I prevent the above case, say only one UA can register to the
> > server?  Please advice.
>
> The only way you *might* be able to block extra registrations is by limiting the account to a specific IP range for registrations but then if you tried to register elsewhere with a legitimate attempt, it would be blocked too.
>
> > Thanks.
>
> Joshua Colp
> Digium
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