[Serusers] Re: [Users] No rtpproxy when clients are behind the same nat
Greger V. Teigre
greger at teigre.com
Tue Mar 6 09:13:21 CET 2007
Atle is right, the only (really) reliable way (from server side) is
manual configuration based on knowledge of the network setup for a group
of users :-)
The NAT optimization paper found as part of the What's New 2.0 on
iptel.org shows how this can be accomplished through the use of a realm
attribute per account.
g-)
Atle Samuelsen wrote:
> Hi rafael,
>
> I might be wrong.. but it's REALLY hard to know if a user is behind the
> same nat.. due to that :
>
> on sip-proxy you see that user Alice and Bob come from the same IP, and
> that they have the same "ip-range" in say contact.
>
> you say "Oh, we see he's behind the same nat.."
> but..
>
> you dont really know what other equitment the other user has behind
> his nat. Say a user has 3 routers
> router 1:
> 192.168.1.1 on "inside"
> 193.212.1.10 on "outside"
>
> router 2: is conected to inside of router 1:
> 192.168.9.1 on "inside"
> 192.168.1.2 on "outside"
>
> router 3: is concted to router 2's inside:
> 192.168.1.1 on "inside"
> 192.168.9.1 on "outside"
>
> one phone is now connected to router 3, and one to router 1.
>
> on router 3 the phone gets the "internal" ip: 192.168.1.2.
> on router 1 the phone gets the ip 192.168.1.3
>
> the phone on router 1, can not send rtppackets to the phone on router
> 3.. and router 3, can not send to router 1.. evenwhilethey are "looking"
> to be behind the same nat.
>
> - Atle
>
> ps: if anybody has a working solutio for this, exept ice/turn/stun
> whatever it's now called.. fel free to update me :)
>
> * Rafael J. Risco G.V. <rafael.risco at gmail.com> [070305 22:06]:
>
>> Hi
>> does anyone has a working example for this escenario?
>>
>> thanks
>> rafael
>>
>> _______________________________________________
>> Users mailing list
>> Users at openser.org
>> http://openser.org/cgi-bin/mailman/listinfo/users
>>
> _______________________________________________
> Serusers mailing list
> Serusers at lists.iptel.org
> http://lists.iptel.org/mailman/listinfo/serusers
>
>
>
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