FaceTime in the middle of the Ocean
http://gizmodo.com/5591084/the-most-remote-facetime-call-on-the-planet
http://gizmodo.com/5591084/the-most-remote-facetime-call-on-the-planet
Packetstan post the third installmemt of the series looking at the components of FaceTime. This one is about the connection that starts the conversation over (TCP/5223) and ends with Jabbering and Jailbreaking...
http://www.packetstan.com/2010/07/special-look-face-time-part-3-call.html
Packetstan post the second installmemt of the series looking at the last two components of FaceTime: SIP and the UDP stream information.
http://www.packetstan.com/2010/07/special-look-face-time-part-2-sip-and.html
As some may have discovered, showing off FaceTime on your new iPhone while on your corporate network resulted in the demo fail!
Apple has posted on their support site that to use FaceTime on a restricted Wi-Fi network, port forwarding must be enabled for ports 53, 80, 443, 4080, 5223, and 16393-16472 (UDP).
http://support.apple.com/kb/HT4245
Packetstan has done some analysis of the FaceTime protocol using WireShark.
http://www.packetstan.com/2010/07/special-look-face-time-part-1.html