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TCP/IP and UDP Ports Used by Apple
Apple has realeased a list of the TCP and UDP ports used by Apple products, such as Mac OS X, Mac OS X Server, AppleShare IP, Network Assistant, Apple Remote Desktop, Macintosh Manager, and MobileMe. Many of these are referred to as “well known,” industry standard ports, but others are machine or implementation specific and could impact the operation of your applications.
For the full list, check out this resource on the Apple site.
