Type the router’s IP address into the address bar, and you should be taken to a log-in screen where you’ll have to enter your username and password. The procedure for enabling MAC address filtering will vary from router to router, but in general you will have to log in to your router using your web browser. By using MAC address filtering, only the devices that you have already approved can gain access to your network. ![]() Since wireless networks by their nature aren’t as secure as wired networks, your wireless router uses MAC address filtering as a security tool to keep unwanted guests out of your network. Other devices that connect to your network also have MAC addresses, such as iPhones or your XBox. Since it is linked to the NIC and not the computer, a computer with two NICs will have two MAC addresses. The MAC address is burned into the NIC, so it is almost impossible to change. The MAC address (also called the physical address or hardware address) is a hexadecimal string of letters and numbers that actually identifies the computer’s network interface card (NIC) rather than the computer itself. Another way computers on a network can identify themselves is by using MAC (Media Access Control) addresses. Each computer has a host name (for example, BOBSCOMP1), and if the computer is connected to a TCP/IP network it will also have an IP address (ie. ![]() Computers on a network can be identified several different ways.
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