[Users] openser and rtpproxy on multihomed host

[Klaus Darilion]

Alexander Bergolth wrote:
> Hi!
> 
> I'm experiencing problems using openser and rtpproxy on a multihomed box
> (IP addresses are 137.208.89.45 and 137.208.89.65).
> 
> The client (firewalled) contacts the server via the first IP address
> (137.208.89.45) but rtpproxy sometimes uses it's second IP
> (137.208.89.65) in the "c=" SDP-information. (See below.)
> However it _sends_ RTP packets from the _first_ IP address. Those
> packets will never pass through the firewall, of course, since the
> clients outgoing RTP traffic is sent to another IP address than the
> incoming traffic is hitting the firewall from.
> 
> Is there a way to tell rtpproxy to use the same IP-address both for the
> c= SDP header and as source address?

I guess you need the bridge mode of rtp proxy. Take a look at the "flags":

http://openser.org/docs/modules/devel/nathelper#AEN296

klaus