Can i Find out if someone else is using my Wifi

Hi All
Can anyone tell me how i can find out if someone else is using my wifi connection. ie someone over the road from me.

Regards

Andy

Just get into your Wireless router administration webpage, and check all the MAC addresses that are connected to the router. If you see a MAC address that does not belong to any of your machines, you know that someone else is sucking up the juice from your network.

I can see about 4 wireless networks, all belonging to my neighbours, all unsecured. Its the biggest mistake to start using your kit with default settings, make sure you have adequate security enabled. If you have it go for WPA-PSK and for good measure try using your MAC filter.

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