Network card identification

How to identify who manufactured your Ethernet Network Interface Card (NIC) and its MAC address:

Getting the MAC address on MS-Windows machines

Getting the MAC address on Linux machines

Run the command
/sbin/ifconfig eth0
This will show the MAC address for the eth0 interface. Run the command without any parameters to show all interfaces. Other information, such as the IP address for each interface, is shown.

A similar command will work under most *nix operating systems. Naming conventions for interfaces vary ('edN' on FreeBSD, for example).

Finding the Manufacturer from the MAC address