Re:Ask HN: How does FaceTime do NAT Traversal?
by st3fan on Saturday March 26, 2011 @10:49AM
(#2372186)
STUN and TURN were already mentioned.
There is also Apple's own NAT-PMP which is more like UPnP but simpler. It can directly ask your (Apple) router to open a port and redirect it incoming traffic to a specific IP address on your local network.
There is also Apple's own NAT-PMP which is more like UPnP but simpler. It can directly ask your (Apple) router to open a port and redirect it incoming traffic to a specific IP address on your local network.
https://secure.wikimedia.org/wikipedia/en/wiki/NAT_Port_Mapp...
I bet Apple also supports UPnP these days.