Anomaly based Intrusion Detection Methods in Network Infrastructure-A Survey

Information technology and its counterpart, the communication technology has become an inevitable part of common man's everyday life in providing predominant value added services 24/7 in many ways. The value addition provided by the information and communication technology (ICT) to the daily life ranges from informal Email services to sensitive military and critical life saving data communication. There is also a dark part of it. The existing vulnerability of the ICT due to the inherent design flaws is at the stake of intruders. Shielding this incredible ICT facility from the malicious hands of the network intruders has become one of the high priorities of the international agenda. This literature survey contains information about many different types and methods of network intrusion detection systems. This study is done to provide the current state of work in the area of network intrusion detection, enabling the researchers to focus their work aptly. This paper also gives an overview of various types of attacks faced by present day enterprise networks. We have given an insight on the various intrusion detection methods and the underlying technology behind it. Information on various datasets that can be used by researchers is also discussed in this paper.