Dude I get no less than 300 attempts a day on this network, Adelphia has port scanners hitting non stop. I am just glad this fucking thing doesnt make a *ding when someone probes me. Everything from NetBios probes to Scanning every port available.
It happens man, just look for repetition, most of the time its just a scan, you are not being targetted and as Labret said, "Automation" is a factor now, too many kiddies saw Hacker and love Jolie - so scanning aint shit.
You could of course.
http://apple.com/switch/