Abstract:
In wireless sensor networks a large number of distributed sensors collaborate to deliver information to the sinks. Such scenario assumes trust between sensor nodes. However, sensors nodes may fail or may be compromised. These compromised nodes take the participation in the routing. They have the ability to disconnect a wireless sensor network from its central base station. Henceforth, security is a critical challenge for creating robust and reliable Wireless sensor networks.
For detection of malicious nodes in wireless sensor networks, we could use REWARD (Receive, Watch, and Redirect) detection scheme. This methodology detects malicious nodes which always drops packets received. We could observe that in the implementation of the scheme, good amount of energy would be consumed and moreover the energy at the sensor node is limited. Therefore, we propose and implement a modified scheme of REWARD by minimizing the number of packets sent by the intermediate nodes in the network. Hence, by this strategy we optimize the energy at the node and also reduce the overhead of the Wireless Sensor network
