The glossary below contains many of the terms you will find in common use throughout the Symantec Security Response website. Please refer to this list to find definitions of terms and answers to other Internet security-related questions.

MAC Media Access Control address

A unique identifier that is available in NICs and other networking equipment. Most network protocols use IEEE: MAC-48, EUI-48, and EUI-64, which are designed to be globally unique. A computer in the network can be identified by using its MAC address and IP address.