A comparative study on the currently existing intrusion detection systems

Intrusion detection systems have become a standard component of network security infrastructure now-a-days. So far, several IDS s have been proposed. And they all have there own limitations as well as advantages. But there has been not enough significant works to put them all together and discuss their merits and demerits in a comparative manner. So when new researchers try to have a research on this specified topic then they have to waste a lot of their time and effort to bring them all together. And then they can start thinking of their own system. This paper however reduces those anxieties to a certain extent. In this paper we discuss almost all the noticeable IDS s proposed so far and focus on each of them respectively. And at last we conclude to some important factors that should come into issue while designing an efficient intrusion detection system.