(For the secretariat, the following information was copied from other sites)
- Check your router
Often times you can check your routers logs - for example if you have FIOS Service or an actionTek router. If you have a linksys there is additional software (firmware) that you can install to give you more functionality.
Aside from that look at the lights on the router itself. If all of your PCs are turned off, and the light is solid your probably ok.
- If that light is flashing, and your computers are off, turn on your computer. Once it has booted up and your logged in, open up your browser and go to the routers administration page - typically at 192.168.0.1 or 192.168.1.1 depending on which router you have.
- Find the tab that says "Attached Devices" or something similar. It will bring up all the computers attached to your router and ones that have recently been attached to your router
- go to a command window (start -> run - type CMD and hit enter) and type in ipconfig /all and hit enter
Compare the IP address, computer name and MAC address (often called the Physical Address or Hardware Address) to what is listed in the routers attached devices. If any of those are not matching to any of your computers, then some one is attached to your WiFi!!!!
- If some one is connected, its time to set a password. Go to the Wireless Security or w/e its called on your router. Setup a WEP key - WRITE IT DOWN BEFORE CONTINUING.
Once your ready click on "Apply" or "Save" and your router will reboot. Once it reboots the intruder will be disconnected, but so will all of your PCs.
- Find your wireless connection in your computers network and then enter in the key you created in step 5. You should now have internet, but your intruder will not!
