The device does not allow traffic through this interface if: The device allows all traffic that does not match entries in the list, or that exactly matches entries in the list. All other traffic is not allowed through the interface. The device allows traffic through the interface only if the source or destination IP address and MAC address matches an entry on the list. When you configure static MAC address binding, you can select the Only allow traffic sent from or to these MAC/IP addresses check box
For information about MAC access control, see Restrict Network Traffic by MAC Address. This feature is similar to the MAC access control feature, except that static MAC address binding associates each MAC address with a specific IP address. You can also use this feature to block all network traffic to devices that match the MAC and IP addresses on this list. If this feature is enabled, a computer with a specified MAC address can send and receive information only if it uses the associated IP address. To use MAC address binding, you must configure the interface to associate a client IP address with a MAC address. This feature can protect your network from ARP poisoning attacks, in which hackers try to change the MAC address of their computers to match a real device on your network. Stay tuned with It’s FOSS for more Linux tutorial and tips.You can control access to an interface on your Firebox by computer hardware (MAC) address. You have successfully changed the MAC address in true Linux style. Now, verify new MAC address: ip link show enp0s31f6 Next, set the new MAC using command: sudo ip link set dev enp0s31f6 address XX:XX:XX:XX:XX:XXįinally, turn the network back on with this command: sudo ip link set dev enp0s31f6 up I would recommend using Macchanger but if you don’t want to use it, there is another way to change the MAC address in Linux.įirst, turn off the network card using command: sudo ip link set dev enp0s31f6 down Method 2: Changing Mac address using iproute2 You can always check the man page for more details. Once you reboot the system, the changes will be automatically lost, and the actual MAC address will be restored again. Where XX:XX:XX:XX:XX:XX is the new MAC id that you want to change.įinally, to revert the MAC address to its original hardware value, run the following command: macchanger -p enp0s31f6 To change the MAC address to a specific value, specify any custom MAC address using command: macchanger -mac=XX:XX:XX:XX:XX:XX You will now see that MAC has been spoofed. Now, to assign any random MAC address to this network card, use: sudo macchanger -r enp0s31f6Īfter changing the MAC id, verify it using command: ip addr
How to Use Macchanger to change MAC addressĭo you remember your network interface name? You got it in the Step 1 earlier. So, choose No (by pressing tab key) and hit Enter key to continue. I recommend not to run it automatically, unless you really need to change your MAC address every time. This gives a new MAC address whenever you attach an Ethernet cable or re-enable WiFi.
Important! You’ll be asked to specify whether macchanger should be set up to run automatically every time a network device is brought up or down.
On Debian, Ubuntu, Linux Mint, Kali Linux: sudo apt install macchanger On Fedora, CentOS, RHEL: sudo dnf install macchanger On Arch Linux or Manjaro: sudo pacman -S macchanger It is available in almost all GNU/Linux operating systems and you can install is using the package installer of your distribution. Macchanger is simple utility to view, modify, and manipulate MAC addresses for your Network interface cards. Method 1: Change MAC address using Macchanger So either try this method on an additional card or be prepared to restart your network. If you do this on a network interface which is currently in use, probably your network connection will be terminated.