Discussion of Intrusion Detection Technology

Intrusion detection technology is an initiative computer network security technology which can find and return the unauthorized or abnormal behavior to running system in time so as to protect the system.Intrusion detection system finds unauthorized or malign network accessing behavior by means of monitoring the states and activities of the system,raises intrusion alert in time and provides effective method for intrusion countermine.This paper introduces the concept of intrusion detection first and then emphasizes the sorts of intrusion detetion system and the methods of intrusion detection.At the same time,it summarizes the popular IDS.Finally,this paper discusses the development trends of intrusion detection system.