1. Enabling multicast policies
Go to System > Config > Features.
Select Show More and enable Multicast Policy. Apply the changes.
2. Creating AirPlay services
Go to Policy & Objects > Objects > Services and create a service as shown for the connection from the Apple TV to the iOS device.
Go to Policy & Objects > Objects > Services and create a service as shown for the connection from the iOS device to the Apple TV.
3. Allowing multicast between the wireless and internal networks
Go to Policy & Objects > Policy > Multicast and create a policy allowing local network traffic to reach the wireless network.
Set Incoming Interface to lan, Outgoing Interface to the wireless interface, and Destination Address to Bonjour.
Create a second policy allowing wireless traffic to reach the internal network.
Set Incoming Interface to the wireless interface, Outgoing Interface to lan, and Destination Address to Bonjour.
4. Allowing airplay between the wireless and internal networks
Go to Policy & Objects > Policy > IPv4 and create a policy allowing traffic from the Apple TV to the iOS device.
Set Incoming Interface to lan, Outgoing Interface to the SSID, and Service to allow connections from the Apple TV to the iOS device.
Create a second policy allowing traffic from the iOS device to the Apple TV.
Set Incoming Interface to the SSID, Outgoing Interface to lan, and Service to allow connections from the iOS device to the Apple TV.
5. Results
Use AirPlay to stream audio or video from an iOS device to the Apple TV.
Go to Log & Report > Traffic Log > Multicast. You will see traffic flowing between the two devices, using both multicast policies.