Design of a cooperative distributed intrusion detection system for AODV

The Ad hoc On Demand Distance Vector (AODV) protocol is a routing protocol designed for mobile ad hoc networks. A mobile ad hoc network can be defined as a network of mobile nodes that communicate over the wireless radio communication channel. To transmit data over such a network, the AODV protocol enables dynamic, self-starting, multihop routing between mobile nodes. However AODV is vulnerable to various kinds of attacks. In this paper we have developed a Cooperative Distributed Intrusion Detection System to protect against some of attacks in AODV such as denial of service and sequence number modification in RREQ (Route Request) packets. We have modified original AODV in network simulator (ns2) to evaluate our solution. The simulation results show that the performance of AODV routing protocol when using our approach is improved significantly under attacks and even better than the original ACDV in some cases.