International Journal of Computer Science and Telecommunications
The area of intrusion detection is the central concept in overall network and computer security architecture. It is an important technology in business sector as well as in research area. By monitoring the computer and network resources, Intrusion Detection System (IDS) detects any of the misuse or unauthorized access which is basically an attack to these resources. Then it alerts and informs administrator for occurrence of an intrusion. Several methods can be used to detect an intrusion. In this paper, the authors have discussed the introduction of intrusion detection system, its types and then different techniques that are commonly used.