Linksys WCG200 - Wireless-G Cable Gateway Wireless Router User Manual page 55

Wireless-G Cable Gateway
What is a MAC Address?
The Media Access Control (MAC) address is a unique number assigned by the manufacturer to any Ethernet
networking device, such as a network adapter, that allows the network to identify it at the hardware level. For all
practical purposes, this number is usually permanent. Unlike IP addresses, which can change every time a
computer logs onto the network, the MAC address of a device stays the same, making it a valuable identifier for
the network.
Appendix A: Troubleshooting 49
Frequently Asked Questions