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.

VLAN Virtual LAN

A logical subgroup within a local area network that is created through software rather than by manually moving cables in the wiring closet. It combines user stations and network devices into a single unit regardless of the physical LAN segment they are attached to. It also lets traffic flow more efficiently within populations of mutual interest.