Step 9: Filter MAC addresses

As a final security precaution, consider limiting access to network adapters with specific MAC addresses. To use MAC-address filtering, you'll need to enable the feature in your router's configuration routine. Look for a filtering button or a menu option. Then enter the MAC addresses you recorded in step 1 for your Wi-Fi adapters. Apply the changes and exit the router's configuration utility.


Most 802.11g routers come configured to work with both 802.11g and 802.11b clients. If you've purchased 802.11g devices for all your wireless systems, choose an 802.11g-only mode to boost performance.