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A MAC Address or Media Access Control Address is a unique identifier assigned to every Network Interface Card. In this post, we will see what is MAC Address and how do you change a MAC Address in Windows 10/8.1. We will also touch upon MAC Address filtering, lookup and spoofing.What is MAC Address
Whether you are using a wired network or a wireless one, you need a network card to connect to other computers and to allow other computers to your computer. While most of us believe that it is the IP address that is significant in contacting another computer on the network, it is not the only factor. More important than IP (Internet Protocol) address is the MAC (Media Access Control) address – an address assigned to the network interface card, so that it is identified on the network.
A Network card is a term used in short for a Network interface card. We call it NIC for short. Every NIC has a MAC address – just like a postal address so that the data packets traveling on your network can reach the correct NIC and from there, your computer. While the IP address is the software part of the Network Interface card (Network card or NIC), the MAC address is the hardware address, without which data packets will just keep on roaming on the network, as they do not have any address where to deliver the data. Each data packet on the network has a header containing the MAC address of the computer you wish to connect to and then the data. The last part of the data packet will contain a bit to ascertain if the data bit was correctly delivered or was it corrupted or changed during the transmission.Structure of MAC Address
A MAC address is separated by full colons, as is the IP address (IPv4 addresses). But unlike only four numeric characters separated by full colons to make it look like a four digit set x 4 parts, the MAC address is a combination of alphanumeric characters. It is a set of six characters separated by six full colons. Also, unlike the four characters used in IP address per set, the MAC address employs only two characters per set. Here is an example of a MAC address for your understanding:
You can see that it is six sets (parts) divided by full colons and can contain both alphabets and characters. The first two or three sets indicate the code of manufacturers of the network interface card just like the first two sets of IP address tells you where you are located.
Read: How to set up MAC filtering in the Dlink router.How To Locate MAC Address of NIC (Network Interface Cards)
To locate the MAC address of your network adaptors, you have to go to the command line. Press WinKey+R, type cmd in the Run dialog box that appears and press Enter key.
Type getmac /v /fo list and press Enter key. The output for each of your NIC adaptor (network adaptors – wired and wireless) will be displayed.Change MAC Address in Windows 11/10
Press Windows Key + Break or Pause key to open System Properties window.
If the Pause key is combined with the Shift key, you may need to press Win+Fn+Pause key.
Once the Device Manager dialog appears, look for the category named Network Adaptors
Select the network adaptor whose MAC address you wish to change
Having done that, now In the list of available options, select Locally Administered MAC Address or Network Address; note that only one of the two options will appear based on the type of your network adaptor
When you select one of the above options, you will get a text box saying Value.
Type a six digit alphanumeric code in the Value field after selecting the radio button; note that you do not have to type the dashes or full colon; if you wish to type 00:4f:gH:HH:88:80, you simply type 004fgHHH8880 without any dashes or full colons; adding dashes may result in error
Close other open dialog boxes (if any) and close the Device Manager
That is the simplest method to change the MAC (Media Access Control) ID of the network adaptor.
TIP: You can also use some of these free MAC Address Changer Tools.MAC Address Spoofing and Filtering
Spoofing is a method by which you change your MAC address to someone else’s MAC address. That is the common notion in the world of Internet. Spoofing is useful when your network won’t let you in due to MAC filter restrictions. Hackers too indulge in MAC address spoofing.
When you change the MAC address using the above method, you are actually spoofing the MAC address. The hardware MAC address remains the same but is given preference only when there is no other address. If you want to revert to the original MAC address, just follow the above steps and instead of inputting a value, select the radio button that says “Not Present” or “No Value“. That will get you back to your original MAC address.
MAC addresses are especially useful when it comes to protecting your network from unwanted connections. All you have to do is to authorize only the MAC addresses that you wish to connect to the Internet or the network. This you can do it easily using third-party programs. You can also filter MAC addresses manually by going to your router page and entering the MAC addresses that are allowed to interact with the router.
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