In a routine check of my Airport clients at home, I noticed a computer called "tppadmins-Mac-Pro.local". I don't own a Mac Pro, but I use one at work, and I do connect to my home Mac Mini with it via screen sharing occasionally, but that work Mac has a different network name, and I turn it off every day when I leave work. Strangely, some of the things I normally see on my client list aren't there, like my Mac Mini, and one of my Apple TVs. Should I block the MAC address of this client and see what happens? Could it just be a mix up in the device name? I've never seen an unauthorized user on my network, and I've also never NOT seen my Mac Mini or my Apple TV connected. Any info/advice appreciated.