A Comparison of AODV Routing Protocols to Prevent Black Hole Attack in Manet

Abstract

Mobile ad hoc network (MANET) is a continuously self-configuring, infrastructure-less network of mobile devices connected wirelessly.Due to limited power supply, physical infrastructure and absence of central base station, malicious nodes can easily disguise themselves among the legitimate nodes. So MANET is vulnerable to many security threats, among which one is the blackhole attack. In this attack, the malicious node misuses the protocols to advertise the shortest path to destination node and drops the data packets subsequently. It deterioates the performance of the network, which is based on many factors including Packet Delivery Ratio and End-to-End Delay. Many effective techniques for detecting the blackhole attack have been devised. Among them are the solutions based on Ad-hoc On demand Distance Vector (AODV) Routing. In this review paper a comparison is done between three such solutions- CBDAODV, MOSAODV and DPRAODV based on two performance criteria mentioned above.