I’ve been underwhelmed (if that’s a word) by the list of common ports used on the Apple platform recently, so I started my own. It’s available at https://krypted.com//guides/common-apple-ports/ if you’re interested. It’s also under the Tools menu of the site. And yes, I’m aware that I can cat /etc/services; this includes some rudimentary notes.
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Installing the Mountain Lion Server VPN Server
OS X Server has long had a VPN service that can be run. The server is capable of running the two most commonly used VPN protocols: PPTP and L2TP. The L2TP protocol is always in use, but the server can run both concurrently. You should use L2TP when at all possible. Sure, “All the great themes have been used up and turned into theme parks.” But security is a theme that it never hurts to keep in the forefront of your mind. If you were thinking of exposing the other services in Mountain Lion Server to the Internet without having users connect to a VPN service then you should think…
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Monitoring/Restarting Retrospect
As of version 8, Retrospect uses port 22024 when the Retrospect Console needs to communicate with the engine. It just so happens that this can become unresponsive when the engine itself decides to stop working. Therefore, if you’re using Retrospect 8, you can run a port scan against port 22024 ( i.e. stroke <IP_ADDRESS> 22024 22024 ) and then restart the engine if it goes unresponsive. To restart the engine, simply unload and then load com.retrospect.launchd.retroengine. For example: /bin/launchctl unload /Library/LaunchDaemons/com.retrospect.launchd.retroengine.plist; /bin/launchctl load /Library/LaunchDaemons/com.retrospect.launchd.retroengine.plist I have found that if you alter the nice value that the engine crashes less (not that I’m saying that it crashes a lot or is buggy…