General Study of Intrusion Detection System and Survey of Agent Based Intrusion Detection System

In today's world one of the most severe threat to computer security is the illegal intrusion into a computer system. As the network applications are growing rapidly, new sort of network attacks are rising continuously. The intrusion detection system IDS is used for the detection of the intrusion activity extends over the public network. IDS may need to deal with different audit record format. IDS have turn out to be essential security tool for detecting the attacks on computer network and resources. Due to this, we presented a review (general study) on IDS. First, we will discuss about intrusion detection later will discuss the type of IDS. We have emphasize on the range of type of IDS like anomaly, misuse, host based, network based and hybrid IDS, specifically IDS based on the anomaly or behavior based IDS along with Agent based technology in real network. At last, the contribution of every single type of IDS is described.