Detecting Packet Droppers and Modifiers in Wireless Sensor Network

Abstract

Wireless networks are widely used because these are very easy to install. However, there are various security issues and problems while deploying it. Two most important issues are Packet modification and dropping. These are the common attacks that can be generated by an attacker to disrupt communication in wireless sensor networks. Many schemes have been proposed to reduce or tolerate such attacks but very few can effectively and efficiently identify the intruders. This paper proposed a simple and an effective scheme, which can identify misbehaving nodes that drop or modify packets. Heuristic ranking algorithm is been used to identify the bad nodes. The alert message will be forwarded to all the users in the network if any misbehaving action occurred, so that no message will reach the misbehaved node and the node will be blocked.