A REVIEW PAPER ON WATCHDOG MECHANISM IN WIRELESS SENSOR NETWORK TO ELIMINATE FALSE MALICIOUS NODE DETECTION

Wireless Sensor network (WSN) are broadly used today in various fields such as environmental control, surveillance task, object tracking, military applications etc. As WSN is an ad-hoc network which is deployed in such an environment which is physically insecure, intrusion detection has been one of the major area of research in WSN. Inorder to achieve an appropriate level of security in WSNs we cannot depend on cryptographic techniques as these techniques fall prey to insider attacks. This paper discusses on watchdog mechanism, one of the intrusion detection techniques in Wireless Sensor Network. Watchdog is a monitoring technique which detects the misbehaving nodes in the network. The main area of focus in this paper is being made to the problems in existing watchdog technique for malicious node detection