Using Hazel, Python, Lingon, and ARP to Determine if a Device is on your Network
A friend of mine (he has a blog over here) gave me an idea for a program. He wanted to know when his kids got home (and when they left). His idea was to have an application that would interrogate his wireless network to see if a specific client was associated with his Access Point. I started down the path of using SNMP to query the Apple AirPort Extreme he owns, but quickly gave that up. The main reason I gave up on that solution (which would have been perfect) is that Apple, in their infinite post-Jobs wisdom) has removed support for SNMP configurations from AirPort Utility 6.0 and has eliminated SNMP from their newer AirPort models. So, dead...