Glossary

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.

packet filtering

A firewall technique that examines the headers of packets requesting connection to a computer behind the firewall and either grants or denies permission to connect based on information held within the packet header according to a set of preestablished rules.