Apple TV port forwarding settings on router

Apple TV port forwarding settings on router

Setup Apple TV port forwarding settings for a Linksys/Cisco router:

Click on “Applications and Gaming” tab
Select “Port Range Forward”
Enter 3689 in Start and End (External -Internal) also try instead UDP port 5353
Protocol should be both
IP Address should be AppTV
Enable
Save Settings and reboot

The Apple TV requires some ports to be open to be able to sync and activate with the Apple Servers. If the ports are not configured properly, you might receive errors.

Apple’s Home Sharing uses TCP port 3689 and UDP port 5353 to communicate with shared iTunes libraries.  Additionally port 123 (TCP/UDP) has to be open to set the time automatically.