Under the Firewall section, click MAC Address Filtering. If you have changed the IP address of your router, click here to check. NOTE: If the page does not load, try visiting to see the router homepage. Type in the web browser's address bar and press. Open a web browser such as Google Chrome™, Mozilla Firefox®, Internet Explorer® or Safari®. To set up MAC filtering, follow the steps below: Make sure the wireless devices you want to permit or block access are currently connected to the access point and are able to access the network.Make sure you've identified all MAC addresses you want to filter.Ensure the following before you set up the MAC address filter feature: IMPORTANT: When you enable this feature, you must enter the MAC address of each client device on your network to allow network access to each. This article will guide you on how to set up a Wireless MAC Filter, permitting or preventing access to your wireless network. You can either permit or prevent specific wireless computers and devices to access your Wi-Fi. Wireless access can be filtered by using the Media Access Control (MAC) addresses of wireless devices transmitting within your wireless network.