Question

What network services, port numbers, outgoing incoming or both, need to be open on a network for an ipod touch to receive Apple Push Notifications?

I know the outgoing port number to set when sending the apns. The only thing is, in my school practically every outgoing (and incoming) port is blocked and as a result APNs do not work. I am sure that if I talked to my network administrator and told him which port to unblock, he would do so. So my question is: What network services, port numbers, outgoing incoming or both, need to be open on a network for an ipod touch to receive Apple Push Notifications?

Answer 1

According to Apple’s docs: port 5223.

If the device is connected over Wi-Fi
and is still unable to receive
notifications, the Wi-Fi network
you’re using might have a firewall
that is blocking port 5223. This port
must be open to TCP traffic for
notifications to work.