Rushing Attack Defending Context Aware Trusted Aodv in Ad-hoc Network

This research aims to identify the security threats in on-demand routing protocol, AODV for Ad-hoc network. In this context we have extended the AODV protocol with trust and recommendation to secure the network. In AODV, establishment of routing path depends on the faster route request and route reply packets. Rushing attacker exploits such faster traversal activities to attack the network. Rushing attackers are identified based on their misbehaviour in comparison to other nodes of the network. Furthermore, trust value is assigned to the misbehaving node and the same is augmented with other aspects of trust like dependency pattern, context, previous history and dynamicity. Finally, based on threshold value of trust, trust evaluating node takes the decision to include or not to include the trustee node in routing path depending on the final trust value. To facilitate the trust computation and decision of our trust model, AODV is enhanced with different functional modules: Node Manager, Trust Module and Decision Manager. Trust based AODV secures the routing path by isolating the rushing attacker, based on their trust value. Our analysis and simulation results show the effectiveness of our proposal against rushing attack.