On Fri, 29 Jan 2010 16:43:59 -0000, <Russell.Mosemann@cune.org> wrote:
The ports are open between the endpoint and Freeswitch. The ports are not open between the two endpoints themselves. If each endpoint is behind its own NAT, neither endpoint will be able to contact the other endpoint unless some kind of forwarding is set up on the firewall to map the external IP address and port to an internal IP address and port.
Thanks but the context I was refering to is... 1. Freeswitch is configured in BypassMedia mode 2. The firewall and the local end-points are configured so that a series of UDP ranges are mapped to their respective end-point (eg. UDP100-1003 for extension #1, 1004-1007 for #2, etc.) ... so that RTP packets flow directly between the two end-points Brian says above that there might be cases where NAT could be a problem. When could this happen? I'd like to get to the bottom of this so that in case a server is a bit short on CPU/network power, I know that there's the alternative of RTP packets by-passing the server... but I also need to know what issues this setup can cause. Thank you.