I recently had a problem where we were running low on IP addresses. I looked in DHCP and had about 655 active leases over the last 7 days. Now I'm pretty sure I don't have that many devices in the entire school! It turns out that there were a large amount of IPhones and other unauthorized mobile devices attached to our wireless. I guess the kids managed to find out the wireless key again! There are a number of solutions to this problem, ...