If you have more 'transient' guests than regular family and friends, this is where you start looking at a guest network. It's much more secure, than just a simple passphrase, but the trade off is convenience. Keep in mind that this will become very labor intensive because every time you want to allow your friends/family who haven't joined the network yet, you will need to go into the router and add their MAC address, and that's after obtaining it (usually) manually from their device. What it will do is prevent anyone with an address you didn't specifically authorize from joining the network. The other option is to turn on MAC filtering (not Mac as in Apple Mac, but the media access control - mac - address) in you router. Just log into your router and make the change (you will have to update your Wi-Fi settings on all your devices when you do that.) If this is the case, you can immediately address the issue by changing your network passphrase (password) to join the network. Theory that it is someone that has broken in to my network?Īgain, I am assuming that you have a wireless network - if it were wired (meaning no Wi-Fi) it would be really difficult to get into your network unless they had a physical connection. I haven't seen that computer for a while now. This may be a PC/Mac that belongs to someone you know, you just don't recognize their computer.

I am assuming that you have a wireless network and you allows friends/family to join the network to surf.

I have a PC that is always connected to the network and Timecapsule.īut I don't recognize that unit name. You will have to look up the settings for your particular router. Each router is different, but all have this functionality. To clear out the unexpired entry on your router, just log into your router, go to the DCHP Client Leases area, and delete the unknown computer. This could be anything from a shared computer that has been cached on your system to a non-expired lease on your router. This answer is based on the comments as the user perhapsmaybeharry covered how Bonjour works and how to disable it.Įdit: New info - Most of the time this computer is not showing up.

Unknown router on my network