AppleMobileDeviceService.exe uses Half-Life server port number 27015

I don't think this is a problem, but have noticed several discussions on the Internet which seem confused by this.
UDP port 27015 is the standard port used by Half-Life servers to communicate with clients.
TCP port 27015 seems to be used by AppleMobileDeviceService.exe to communicate locally with iTunes.exe and iTunesHelper.exe.
Since they are different protocols, there shouldn't be any conflict, but I haven't seen any mention of this in discussions I've found and I know a lot of people who, when the open up a firewall for a particular port, will open in for both UDP and TCP.
I don't know if this is a vulnerability, i.e. if an open firewall port would allow anything on the PC to be compromised, but I'm surprised Apple chose a port number which is so well-known, rather than a new arbitrary one, as there does seem to be the potential for a problem.
In any event, I intend to keep TCP port 27015 closed in my firewalls!

In my firewall (Sunbelt Personal Firewall) I'm showing two local point connections from the AMDS at port 27015 (both on the TCP protocol) as well as a listening point at port 27015 for the TCP protocol. I'm not sure where you got your information StarNamer, but source dedicated servers use both TCP and UDP ports.
{quote}
UDP 1200 (Friends Network)
UDP 27000 to 27015 (Gameport)
UDP 27020
TCP 27030 to 27039
TCP 27015 (SRCDS Rcon port)
See this page for more information: http://planethalflife.gamespy.com/View.php?view=HL2Guides.Detail&id=4&game=3

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