How to change Mac Address in Backtrack ?

well changing mac address in Backtrack is pretty easy…

What Is Mac Address ?

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 themedia access control protocol sublayer of the OSI reference model.

MAC addresses are most often assigned by the manufacturer of a network interface controller (NIC) and are stored in its hardware, such as the card’s read-only memory or some other firmware mechanism. If assigned by the manufacturer, a MAC address usually encodes the manufacturer’s registered identification number and may be referred to as the burned-in address (BIA). It may also be known as an Ethernet hardware address (EHA), hardware address or physical address. This can be contrasted to a programmed address, where the host device issues commands to the NIC to use an arbitrary address. An example is a SOHO router, for which the ISP grants access to only one MAC address (used previously to inserting the router) so the router must use that MAC address on its Internet-facing NIC. Therefore the router administrator configures a MAC address to override the burned-in one.

A network node may have multiple NICs and each must have one unique MAC address per NIC.

MAC addresses are formed according to the rules of one of three numbering name spaces managed by the Institute of Electrical and Electronics Engineers(IEEE): MAC-48, EUI-48, and EUI-64. The IEEE claims trademarks on the names EUI-48 and EUI-64, in which EUI is an abbreviation for Extended Unique Identifier.-WikiPedia~

Now Let Me Tell Youh , How To Change Mac Address In Backtrack..

1. Open ConsoLe than type ifconfig eth0 down

2. Now type , macchanger -r eth0 

3. ifconfig eth0 up

1 Command – it will disable eth0 

2 Command – it will generate random Mac Address

3 Command – it will enable the eth0 😀

Change Mac Address To Whatever You Want-

Change Mac Address Of your Choice-

Open Terminal and type – 

1. ifconfig eth0 down

2.type in terminal  macchanger –mac your MAc address with : : : example 11:22:33:44:55 eth0

                             machchanger –mac 11:22:33:44:55 eth0

3. ifconfig eth0 up

Pretty easy han ? you can msg me if you have any problem 🙂