[Kamailio-Users] Keep-alive implementation

[kokoska rokoska]

Iñaki Baz Castillo napsal(a):
> El Martes, 9 de Junio de 2009, Alex Balashov escribió:
>> Iñaki Baz Castillo wrote:
>>> El Martes, 9 de Junio de 2009, Saúl Ibarra escribió:
>>>> Nevertheless, I would keep it active, and set ping_nated_only to 1, so
>>>> you just ping clients which are known to be behind NAT.
>>> The only problem with it is when a fuc**ng SIP ALG enabled router takes
>>> place. It will modify the request so it'll look as coming from public IP
>>> (NAT cannot be detected in Kamailio), but most of these infernal routers
>>> don't mantain the keepalive so the input traffic is closed after UDP
>>> "connection" expires in the router.
>> Yep.  Infernal - well said!
> 
> This is my personal battle against SIP ALG routers:
>   http://www.voip-info.org/wiki/view/Routers+SIP+ALG
> 
> Please, feel free to add any useful information about infernal routers with 
> SIP ALG enabled.
> 
> Thanks a lot :)
> 

SIP ALG routers are big pain, at least for me :-)

What I'm trying to do is automagically detect users behind such a stupid
routers (analyzing INVITEs and REGISTERs in sip-dump) and automatically
send them e-mails aksing to disable SIP ALG.
Just my 2c...

Best regards,

kokoska.rokosoka