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Log in to your router, you should see a list of all the MAC addresses connected and simply boot the ones that arent yours. And change or set your security key (Use WPA2) |
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If you are using Windows search for the "Network" icon (if you can't find it on the desktop or in the Start menu do a search for it) and open it, you should see the network name (usually "PC-Name") of every computer that is connected to the network, including Xbox 360 (but you can't see iOs devices, at least on Windows) |
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First, you have to go to your WiFi router's management page. For most routers, it at the IP address 192.168.1.1 . Check your router's manual to confirm. Then, depending on your router, you will have a page which will show all the names and physical addresses of all the devices connected. In my case, it shows up right on the first page. I have attached an image to demonstrate. Hope this helps. |
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Look at the list of Mac addresses that are connected to your router by finding the mac address list on you router settings, if there are any that do not belong to your computer then make a note of the ip, boot that ip and then change your routers security settings including the login username/password for the router settings consoles if you ever see the same computer name again as the one that you booted then you have a security problem and should take further steps... |
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Our parent site has a post about it http://www.lockergnome.com/reflections/2011/07/25/could-someone-be-spying-on-your-wireless-network/ |
I'm no sure, but it is best to put a password on it, that way only u know the password : )
What OS do you use on your main computer?
OS has nothing to do with it. Log in to the router, doesnt matter what OS
Different OSes have different ways of doing that.
Josh and zman are technically both right. One way is to log on to your routers settings and look at the devices. One problem is that it will only show if they are currently online and might only show their MAC address. Another way is to use a dedicated network monitoring program which would be platform-specific. There, argument averted.