I would like to to block "iMessage" on my home network (kids spending too much time messaging from iPods...)
In this article, it says that iMessage uses port 5223 TCP
However, in my outgoing firewall config, it doesn't have this port open.
So the way I understand it, it shouldn't be working...?
Refer to the attached screenshot.
I don't know much about this side of things, if anyone can assist, I would appreciate it.