How to Know if Someone Is Using Your Wireless

While wireless networks have made home networking more convenient, the technology also carries an important security concern for many users. Many different security options exist to keep unwanted users from connecting to the network, including requiring an access password or providing the router with a list of devices that are approved to connect to it. The settings menu for most routers allows a network administrator to view a list of all of the devices that are connected to the network.

...
Access your router's settings menu to see which devices are connected.

Step

Click the Windows Start button or press the Windows key on your computer, type "cmd" and press Enter to open a command prompt.

Step

Type "ipconfig" and press Enter.

Step

Find the section that lists information for your wireless adapter. Note the address listed as "Default Gateway."

Step

Open a web browser and navigate to the address you noted.

Step

Log in to your router's settings menu.

Step

Open your router's DHCP client table. Depending on your router, this option may be listed under a "Local Network" or "LAN Setup" menu.