i know, i know it's been a while, but my family has a wifi problem: there is during the day at least 2-3 unknown computers on our router. I have logged into the wifi router admin page, and found 2-3 extra devices all computers, well tomorrow, I'm going to find the MAC addresses of our devices that don't have a name; 2 android netbooks, an ipod touch, 2 computers, a blueray player, and my original xbox, of those devices, I know the ip addresses of the xbox, my computer and dads computer. well I want to know is it possible to find a certain IP or MAC, like to physically find the device? maybe with a linux laptop?