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.

IP number

A unique number (also called a dotted quad) consisting of 4 parts separated by dots (for example, Every computer on the Internet has a unique IP number. If a computer does not have an IP number, it is not really on the Internet. Most computers also have one or more domain names that are easier for people to remember.