Intrusion Detection Systems: A Review

Given the exponential growth of Internet and increased availability of bandwidth, Intrusion Detection has become the critical component of Information Security and the importance of secure networks has tremendously increased. Though the concept of Intrusion Detection was introduced by James Anderson J. P. in the year 1980, it has gained lots of importance in the recent years because of the recent attacks on the IT infrastructure. The main objective of this study is to examine the existing literature on various approaches for Intrusion Detection in particular Anomaly Detection, to examine their conceptual foundations, to taxonomize the Intrusion Detection System (IDS) and to develop a morphological framework for IDS for easy understanding. In this study a detailed survey of IDS from the initial days, the development of IDS, architectures, components are presented.