Find Machine MAC Address

Posted on March 8, 2010 by Jianming Li

What is a MAC Address

* MAC stands for Media Access Control.
* It’s a unique number assigned to each network interface card (NIC).
* Also called physical address, hardware address, network adapter address
* Used in media access control protocol sublayer.

How to Find a Machine MAC Address

Most Unix Machines

* /sbin/ifconfig -a

eth0      Link encap:Ethernet  HWaddr 00:30:A6:C0:1F:C0  
eth1      Link encap:Ethernet  HWaddr 00:30:B6:C0:F7:FA

Windows Machines

* ipconfig /all

Ethernet adapter Local Area Connection:
 
        Media State . . . . . . . . . . . : Media disconnected
        Description . . . . . . . . . . . : Broadcom NetXtreme 57xx Gigabit Cont
roller
        Physical Address. . . . . . . . . : 00-1F-23-1D-00-3D
 
Ethernet adapter Wireless Network Connection:
 
        Connection-specific DNS Suffix  . : home
        Description . . . . . . . . . . . : Intel(R) PRO/Wireless 3945ABG Networ
k Connection
        Physical Address. . . . . . . . . : 00-1F-AE-23-28-67

Reference

* http://en.wikipedia.org/wiki/MAC_address
* http://www.coffer.com/mac_info/locate-unix.html

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