Every device that has a wireless card or adapter has a MAC address. This MAC address can be used to provide or deny access to the device on a network. If any device is accessing your wireless network that you actually don’t want to happen, then you can definitely block the device from accessing the network. Using the MAC address for filtering the device is one such option. You can find the MAC address of the device you are going to block on your router’s setup page. Continue to read to learn how to block MAC address on Arris router.