The Network Security. Org

An Introduction to IDS

Intrusion detection systems, or IDSs, have become an important component in the Security Officer's toolbox. However, many security experts are still in the dark about IDS, unsure about what IDS tools do, how to use them, or why they must. This article will offer a brief overview of intrusion detection systems, including: a description of what IDSs are, the functions they serve, the two primary types of IDS, and the different methods of intrusion detection that they may employ.

IDS Overview

In a nutshell, intrusion detection systems do exactly as the name suggests: they detect possible intrusions. More specifically, IDS tools aim to detect computer attacks and/or computer misuse, and to alert the proper individuals upon detection. An IDS installed on a network provides much the same purpose as a burglar alarm system installed in a house. Through various methods, both detect when an intruder/attacker/burglar is present, and both subsequently issue some type of warning or alert. An Introduction to IDS

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