Media Access Control address, a hardware address that uniquely identifies each node of a network. In IEEE 802 networks, the Data Link Control (DLC) layer of the OSI Reference Model is divided into two sublayers: the Logical Link Control (LLC) layer and the Media Access Control (MAC) layer. The MAC layer interfaces directly with the network medium.Consequently, each different type of network medium requires a different MAC layer. On networks that do not conform to the IEEE 802 standards but do conform to the OSI Reference Model, the node address is called the Data Link Control (DLC) address.
If you want to change your network card mac address you need to use simple utility called mac changer.MAC changer is a utility for manipulating the MAC address of network interfaces
You’re in a DHCP network with some kind of IP-based restriction
You’ve a cluster that boot with BOOTP and you want to have a clean set of MACs
Debug MAC based routes
MAC Changer Features
Set specific MAC address of a network interface
Set the MAC randomly
Set a MAC of another vendor
Set another MAC of the same vendor
Set a MAC of the same kind (eg: wireless card)
Display a vendor MAC list (today, 6800 items) to choose from
Install MAC Changer in Debian
#apt-get install macchanger
Install MAC Changer in Ubuntu
sudo apt-get install macchanger
This will complete the installation.
If you Find your MAC address using the following command
eth0 Link encap:Ethernet HWaddr 00:0C:29:A8:D0:FA
inet addr:172.20.22.35 Bcast:172.20.22.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fea8:d0fa/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:7690 errors:0 dropped:0 overruns:0 frame:0
TX packets:6399 errors:0 dropped:0 overruns:0 carrier:0
RX bytes:4284579 (4.0 MiB) TX bytes:876317 (855.7 KiB)
Interrupt:177 Base address:0x1080
In the above example MAC Address is 00:0C:29:A8:D0:FA
If you want to configure MAC Changer you need to stop the networking services using the following command
For Debian Users
For Ubuntu Users
sudo /etc/init.d/networking stop
Now you need to configure your MAC address using the following examples
MAC Changer Syntax
macchanger [options] device
# macchanger eth1
Current MAC: 00:09:a5:eb:23:f7 (Hansung Eletronic Industries Development Co., Ltd)
Faked MAC: 00:09:a5:eb:23:f8 (Hansung Eletronic Industries Development Co., Ltd)
macchanger --endding eth1
Current MAC: 00:09:a5:eb:23:f8 (Hansung Eletronic Industries Development Co., Ltd)
Faked MAC: 00:09:a5:6f:31:23 (Hansung Eletronic Industries Development Co., Ltd)
macchanger --another eth1
Current MAC: 00:09:a5:6f:31:23 (Hansung Eletronic Industries Development Co., Ltd)
Faked MAC: 00:11:18:5b:3a:1f (Blx Ic Design Corp., Ltd.)
# macchanger -A eth1
Current MAC: 00:06:5b:f6:f3:48 (Dell Computer Corp.)
Faked MAC: 00:0d:11:93:0c:4f (Dentsply – Gendex)
# macchanger -r eth1
Current MAC: 00:0d:11:93:0c:4f (Dentsply – Gendex)
Faked MAC: 3c:f1:89:f9:1f:ce (unknown)
macchanger --mac=01:23:45:67:89:AB eth1
Current MAC: 00:40:96:43:87:65 [wireless] (Cisco/Aironet 4800/340)
Faked MAC: 01:23:45:67:89:ab (unknown)
Num MAC Vendor
— — ——
065 – 00:00:7d – Cray Research Superservers,Inc
068 – 00:00:80 – Cray Communications (formerly Dowty Network Services)
317 – 00:40:a6 – Cray Research Inc.
Here is the list of available options for MAC Changer
Show summary of options.
Show version of program.
Don’t change the vendor bytes.
Set random vendor MAC of the same kind.
-A Set random vendor MAC of any kind.
Set fully random MAC.
Print known vendors (with keyword in the vendor’s description string)
Set the MAC XX:XX:XX:XX:XX:XX
If you completed the your MAC address changes you need to start the networking service using the following command
For Debian Users
For Ubuntu Users
sudo /etc/init.d/networking start
It is possible to change the mac address with the ifconfig command as well, but without most of the features of MAC changer.
Just write eg.: ifconfig eth1 hw ether 01:23:45:67:89:ab
And this is easier??? then:
ifconfig eth0 down hw ether 00:00:00:00:00:01
ifconfig eth0 up
It is also possible to set this in you /etc/network/interfaces, so it stays active even after reboot. I don’t see much point in this software?
iface eth0 inet dhcp
hwaddress ether 01:23:45:67:89:AB
i also think that programme is useless except the manufacture database
I think that program is great I need a different mac ever boot how do I load macchanger on boot?
its not working any more
You guys are missing the point of this software- it’s to get a DIFFERENT, RANDOM MAC every time you bootup.
I’ve created a script to run at the start at a session that set a new and random MAC address for my network connections on my computer at startup using this macchanger tool. This is tested on my Ubuntu 7.04 installation with Gnome Network Manager removed and Wicd installed instead. eth0 is my wired connection and eth1 my wireless connection.
1. Create a sh script with these commands to E.G. “randomMac.sh”:
killall /opt/wicd/daemon.py # closes use of eth1 by Wicd
ifconfig eth1 down # deactivate eth1
macchanger -A eth0 # change mac address for eth0
sleep 1 # wait a little to get different random mac addresses
macchanger -A eth1 # change mac address for eth1
ifconfig eth1 up # activates eth1
/opt/wicd/daemon.py 2> /dev/null # starts Wicd daemon again
/opt/wicd/tray-dapper.py 2> /dev/null # starts the Wicd tray
2. Read the current mac addresses with the tool ifconfig.
3. Run the script with the command “sudo sh randomMac.sh”.
4. If the mac addresses is changed correct with the script then add the command “sudo sh randomMac.sh” to your session.
This works for me. If gnome network manager is used instead of Wicd then some other way of closing it’s use of the wireless connection so macchanger can change the mac address.
People! What are you talking about??? I want to change my Mac address and I know nothing about computers! What shall I do? I don’t trust that softwares you can dawnload from the internet. Can you tell me how to do it step by step? Please???
The above MAC number is live number in my PC, now i want to change my MAC number to 00-19-D1-1E-E2-12.
how to change my MAC number. If once changed any problem occur in feature.
>People! What are you talking about???
>I want to change my Mac address and
>I know nothing about computers!
>What shall I do? I don’t trust that
>softwares you can dawnload from the
>internet. Can you tell me how to do
>it step by step? Please???
Then why are you running Debian?
if you want to change your mac address, all you have to do is to read post #3…, but if you want commands, just type..
vi /etc/network/interfaces (in case that you dont have vim and it should be like the following..)
auto lo eth0
iface lo inet loopback
iface eth0 inet dhcp
hwaddress ether 00:25:64:7f:bb:46
the hwaddress ether 00:25:64:7f:bb:46 changes the mac address for the eth0 interface…this is just an example.
MICROSOFT GIVES YOU A WINDOW, LINUX GIVES YOU THE WHOLE HOUSE.
/etc/network/interfaces is not used with network-manager that is the manager by default in Debian now, so esneil, you are wrong.