[Kamailio-Users] Rtpproxy not recording media stream

[Klaus Darilion]

Jeff Brower schrieb:
> Raúl-
> 
>> On Tuesday 12 January 2010 17:46:15 Vikram Ragukumar wrote:
>>> Daniel,
>>>
>>> Thank you for your reply.
>>>
>>>              -----------------------
>>>
>>>             |       CentOS5.4       |    -----------
>>>
>>>   --------  | ----     ---     ---- |   | CentOS5.4 |
>>>
>>> |Internet|--|eth0|---|br0|---|eth1|----| Asterisk  |
>>>
>>>   --------  | ----     ---     ---- |    -----------
>>>
>>>             | Kamailio + rtpproxy   |
>>>
>>>              -----------------------
>>>
>>> br0 has a static Public IPv4 address a.b.c.d, and acts as a bridge
>>> between eth0 and eth1. Both eth0 and eth1 do not have IPv4 addresses.
>> Why did you use a bridge interface (br0) between Kamailio and Asterisk ? ...
>> did you know that you will overload your kamailio machine without need .. ?
> 
> This is a customer requirement, otherwise we wouldn't do it.  The customer wants the Asterisk server and some other
> servers on a different LAN segment.  We can remove the bridge for testing.

With a bridge interface you do not have different LAN segments. A bridge 
bridges multiple LAN segments into a single one. Probably they want to 
have some kind of security for their Asterisk server, but using a bridge 
interface connects the Internet and the LAN segment transparently. Maybe 
you have to teach the customer.

For separating the networks, it would be better (from security point of 
view), to NOT use a bridge interface, but do the bridging on application 
layer. Therefore Kamailio supports "multi-homing" and therefore rtpproxy 
has a "bridge-mode".

              -----------------------
             |                       |
             |      -Kamailio-       |    -----------
             |     /     |    \      |
   --------  | -------   |   ------- |   | CentOS5.4 |
             |           |           |
|Internet|--|  eth0 |   |   | eth1  |---| Asterisk  |
             |           |           |
   --------  | -------   |   ------- |    -----------
             |     \     V    /      |
             |      -rtpproxy-       |
              -----------------------

In this setup, if you disable routing on the Kamailio server, there is 
no direct connection possible between the Internet and the Asterisk 
server. Only data which passed either Kamailio or rtpproxy can get from 
the Internet into the LAN segment.

In this case, Kamailio+rtpproxy are working in SBC-like style.

regards
Klaus