I would like to know what is the URL thru which Apple updates occur.

I need this to setup caching for my Squid Proxy server.

2 Answers 2


According to this Apple KB Document, ports 80 and 8088 are used for SUS.


Apple has documentation for their Software Update server built in to OS X Server here -- see under "Other services". This doesn't seem to give the detail you need, but it does mention the /etc/swupd/swupd.conf configuration file, which might contain that information.

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