Re: [Sip] problem with NAT

["Sujith Kumar" <sujith_km@hotmail.com>]

Hi Suresh,
            The sip registration should have a time out and after the time 
out, the sip client needs to register again. The SIP register timeout should 
be less than (or equal) the Transition table entry time out.
I hope, this will solve your problem,.

Regds,
Sujith



> From: suresh t <sureshmaillist@yahoo.co.uk>
> To: sip@ietf.org
> Subject: [Sip] problem with NAT
> Date: Tue, 27 May 2003 03:44:49 +0100 (BST)
>
> hi all..
>
> i got one doubt reg. NAT traversal of the SIP
> messages...pls clarify me ASAP...
>
> suppose if the user1 is using local Ip address and
> registers with the proxy with Ip address and port(the
> proxy registers the NATed IP and port(dynamic)).
>
> and suppose it is a chat like application, the user2
> wants to connect user1 through some private protocol,
> which is using TCP, but after a long time...
>
> in this case, the translation table(NAT) in the Router
>
> of user1 is timed out and has been purged. then the
> user2 cannot access the user1's system.
>
> how can i solve the above problem..?
>
> ur suggestion is highly appreciated.
>
> thanks in advance
> suresh
>
>
>
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_______________________________________________
Sip mailing list  https://www1.ietf.org/mailman/listinfo/sip
This list is for NEW development of the core SIP Protocol
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Use sipping@ietf.org for new developments on the application of sip