Hello, Is it possible to configure Mac OS to turn on sharing preferences, like iTunes and iPhoto library sharing, etc. depending on the network you're on? Right now, if I got on a public wifi network, everyone can see my iPhoto and iTunes library. I would like those to only be accessible to computers connected to my home network. In fact, if I could create sharing preferences based on what network I'm currently on (Fort Knox for public ones, more relaxed for at home ones), I'd appreciate help on setting that up. I've googled and looked around system prefs, but can't find anything to do this. Seems like a pretty easy thing to do, but I'm stumped.