AODV based secure routing algorithm against Sinkhole attack in wirelesses Sensor Networks

Wireless sensor Networks consist of small nodes with sensing, computation and wireless communication wireless capabilities. These Networks are used in many applications in military, ecological, and health-related areas. These applications often include the monitoring of sensitive information therefore security is important in WSNs. Routing attacks can have devastating effect on wireless Sensor Network and present a major challenge when designing security mechanisms. Sinkhole attack is the most destructive routing attack for these networks, it enable many other attack. In this type of attack sinkhole node tries to attract data to itself by convincing neighbors through broadcasting fake routing information. This paper present an AODV based secure routing algorithm based on mobile agent for detecting the malicious node in sinkhole attack. The algorithm detects sinkhole node by finding the difference of nodes sequence numbers using threshold value. It also shows performance evaluation of AODV with the enhanced secure routing algorithm and existing secure routing algorithm through simulations, which confirmed the effectiveness and accuracy of the algorithm by considering performance metrics as Throughput, PDR and Packet loss. Simulation is carried out using simulator NS2.