On August 3, 2012 at 11:22, PeterN said...
Can you ping the router and Crestron.com from the mc3 setup page? Is your modem bridged to the router you're using so that the router is receiving an external IP on its wan port? Is the mc3 set up with static ip or dhcp? If static, did you enter in the DNS servers info?
I've seen the DDNS successfully register in double-NAT situations and without any ports being forwarded to the processor so it sounds like an Ethernet config issue to me.
Thanks Peter,
Forgot to setup the DNS servers....