[Serusers] RTPproxy between two non routables networks

Joao Pereira joao.pereira at fccn.pt
Wed Oct 19 19:16:56 CEST 2005


Hi, I have SER connected to two non-routable networks:
My machine has two IP addresses: 193.136.2.2 and 10.0.0.135
And I want the clients in these two networks o speak each other.
I started RTPproxy with "-l 10.0.0.135/193.136.2.2" option.

And I tried the configuration example that´s in:
/ser-0.9.0/modules/nathelper/examples/alg.cfg

Thats my network configuration:

client A                                                       
|-------|                                   client B
193.136.7.13- ------------- 193.136.2.2--|  SER  |-- 
10.0.0.135---------10.0.11.243
public IP client                SERs public IP     |-------|    SERs 
private IP       private IP client


But even with RTPproxy and NAThelper it isnt working, because when I 
call from client A to client B, this happens:
INVITE: 193.136.7.13 --> 193.136.2.2    (thats OK)
INVITE: 193.136.2.2 --> 10.0.11.243 (ERROR:this cant happen because the 
networks are non routable)
It should be 10.0.0.135 to contact client B.


 From client B to client A the same happens:
INVITE: 10.0.11.243 --> 10.0.0.135
INVITE: 10.0.0.135 --> 193.136.7.13   ERROR: non routable networks

Can someone tell me what changes must be done to implement the proxying 
of the calls between the two SER IP addresses?

Thanks
Joao Pereira
www.fccn.pt




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