Not every device connected to your network is one you want using up your bandwidth. If you find yourself in a situation where you want to deny online access to your leeching neighbor (I don’t care how good her pumpkin pie is!), ungrateful roommates (now they will have time to actually clean the place) or just a random unknown device, you can block them using the MAC Address Filter.
The Media Access Control (MAC) Filter can be used to create a list of allowed devices or a list of blocked devices. First things first, you will need to know the MAC address of the devices you want to allow or block. Here’s another helpful blog explaining how to find the connected device’s MAC address. Now that you have the MAC address of the device you want to allow or block, let’s get started.
While connected to your wireless network, open up your router’s settings by typing 192.168.0.1 in the address bar of any web browser. Log in with your admin username and password (you should have created these when you initially set up your router. If you have forgotten this information, you will need to reset your device and log in with default account info).
Note: Newer routers have the option to assign a schedule for internet access, giving you the ability to allow or block devices only during certain times/days.