[Kamailio-Users] what is the best solution NAT problem

[Iñaki Baz Castillo]

2008/10/13 Ricky Gutierrez <xserverlinux at yahoo.com>:
> Note that when the INVITE/200/(ACK) comes from the LAN 192.168.10.X and goes
>  through OpenSer, you must replace the media IP in the SDP and the IP
>  in "Contact" with the **public** IP of the LAN router, that is a dynamic IP
>  and AFAIK it's not valid to set a domain in the SDP.
>
>  And when he INVITE/200/(ACK) comes from Internet and goes through OpenSer,
> you
>  must replace the media IP in the SDP and IP in "Contact" with the eth1 IP
> of
>  RtpProxy (19.168.10.1).


> Iñaki I am replacing it for the private ip that I obtain of my router adsl
> 192.168.1.64, in some examples I read that they replace for the ip it
> public.. what you try to say is that it replaces the ip that  comes from the
> router for the ip of the lan

Well, I'm telling you a possibility. Instead of saying me what you
read in other examples, try it and try to understand "why".

Call from Phone1 and Phone2:
a) When Phone2 receives an INVITE from Phone1 it must see in the SDP
the **rutable** IP of the RtpProxy.
b) When Phone1 receives the 200 OK from Phone1 it must see in the SDP
the **rutable** IP of the RtpProxy.

IP's in a) and b) could need to be different.




>
>  Also, you need the SIP ports and RtpProxy media ports redirected in the
> router
>  to the RtpProxy server.
>
> that already has it configured in my router ...
>
>
>  Anyway, this scenario is not appropiate for a businnes service.
>
> you are right,  I have a wall of NAT
>
>  I have open the ports UDP 5060:5065, 10000:20000, 35000:65000
>  TCP: 5060
>
> Why do you open all these ports? and what do you mean with "open"? don't you
> mean "redirected"?
>
> excuse me, I meant that the ports this redirect to my server
>
>
> PD: A suggestion: Buy an space in a datacenter (a virtual machine could be
> enough depending on your traffic ammount) and install the OpenSer and
> RtpProxy decently in a host with public IP.
>
> ;)
>
> best regards ..
>
> rickygm
>
>



-- 
Iñaki Baz Castillo
<ibc at aliax.net>