How to change MAC address

Wikipedia defines MAC Address as :
A media access control address (MAC address) is a unique identifier assigned to network interfaces for communications on the physical network segment. MAC addresses are used as a network address for most IEEE 802 network technologies, including Ethernet. Logically, MAC addresses are used in the media access control protocol sublayer of the OSI reference model.
MAC address is a 6 groups of two hexadecimal value separated by ':' ,  assigned to the network interface card. The form of the addressing is known as EUI-64.  MAC Address are assigned by the manufacturer and therefore are unique for all the interface cards. Therefore MAC Address of a NIC is its identity. Its writted in a read only memory of the device.

If you are curious enough then you might want to find the mac address of your NIC card if its so then open your terminal and hit the command ifconfig interface . For my case the result is as follows:
[paras@c2w ~]$ ifconfig em1
em1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.1.10  netmask 255.255.255.0  broadcast 192.168.1.255
        inet6 fe80::725a:b6ff:fe08:cb3f  prefixlen 64  scopeid 0x20<link>
        ether 70:5a:b6:08:cb:3f  txqueuelen 1000  (Ethernet)
        RX packets 51281  bytes 39148048 (37.3 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 52656  bytes 12896736 (12.2 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 16  
Here the mac address is the ether value which is 70:5a:b6:08:cb:3f  for my Ethernet card em1. You will see more of this on the video attached below. Similarly for my wireless card the mac address is highlighted as follows:
[paras@c2w ~]$ ifconfig wlan0
wlan0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        ether 00:17:c4:c2:92:d3  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
Because of this reason, MAC address being unique for each network device, MAC Address can be used as a security measure too. For example in a network mac address is extensively used for security measure. Like for a Local Area Network port security is obtained by the use of MAC address. Not only this, wireless networks are secured by the use of MAC filtering.


However, hackers are those who want to go beyond the security system. They come up with some way out to  hack these security system. And yes, hackers have been able to figure out the trick in tricking these systems by use of some applications to change the mac address. Here in this video attached it has a demonstration how we can trick system to bypass the security measures implemented using MAC Address of a device.

Comments

  1. UnknownJuly 27, 2013 at 2:54 PM

    It is advisable that if your internet connection is more vulnerable to cyber attacks then you must change the MAC Address of your network adapters regularly.

    Thanks
    Silvester Norman

    Change Mac Address

    ReplyDelete

Post a Comment

Popular posts from this blog

Automate file upload in Selenium IDE

Image
Selenium IDE is an integrated development environment for Selenium tests. It records your interactions with websites to help you generate and maintain site automation, tests, and remove the need to manually step through repetitive tasks. Selenium IDE can be installed in Google Chrome from  here . For Firefox visit this  link . File upload in Selenium IDE cannot be automated simply by recording from the IDE. Because when we select the file input field, the dialog that opens up is a system window which cannot be controlled by Selenium IDE. Therefore, clicking the input file field to select a file will not work. Also the selected file path is changed to C:\fakepath\filename.extension. So to fix this issue, we need to configure the browser to support file upload and then instead of clicking the input field we set the file using ‘type’ selenium command which is shown below. First, to support file upload in Selenium IDE, configure your browser to support file upload: Visit ‘...
Read more

How To Install and Configure Nextcloud

Image
  Original post: https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-nextcloud-on-ubuntu-20-04 Step 1 – Installing Nextcloud We will be installing Nextcloud using the  Snap  packaging system. This packaging system, available on Ubuntu 20.04 by default, allows organizations to ship software, along with all associated dependencies and configuration, in a self-contained unit with automatic updates. This means that instead of installing and configuring a web and database server and then configuring the Nextcloud app to run on it, we can install the  snap  package which handles the underlying systems automatically. To download the Nextcloud snap package and install it on the system, type: sudo snap install nextcloud Copy The Nextcloud package will be downloaded and installed on your server. You can confirm that the installation process was successful by listing the changes associated with the snap: snap changes nextcloud Copy Output I...
Read more

Bruteforce a router to hack admin password using Hydra

Image
Hydra can be used for bruteforce attack on a router to retrieve admin's password. For this, a password list needs to be created for my case it is password.lst. The username I am using in the bruteforce attack is admin and the router's password is 192.168.1.19 which might differ for your case. The command is as follows that I used: hydra -l admin -P password.lst 192.168.1.19 http-get -m / The above image shows a screenshot of my attack used on my TP-LINK router. The found password is underlined by red underline.
Read more