Reliable Distance Vector routing protocol to handle Blackhole and Selfish (RDVBS) nodes in Ad hoc Networks

Properties of Mobile Ad hoc Networks (MANETs) present major vulnerabilities in security. The threats considered in MANETs may be due to maliciousness of a node that intentionally disrupts the network by using variety of attacks and/or due to selfishness of the node which does not perform certain operations due to a wish to save power. None of the existing algorithms to mitigate black hole attacks handles selfish nodes. We present a first such algorithm which handles blacknode attack as well as selfish nodes. A co-operative security scheme called Reliable Ad hoc On-demand Distance Vector routing protocol has been proposed to solve the problem of attack by Blackhole node as well as Selfish behavior (RDV BS) . RDV BS behaves like AODV in the absence of attack with only a slight increase in the routing overhead and, detects and isolates black nodes and selfish nodes in the presence of attack. It also recovers from the attack when a black node leaves the network or a selfish node becomes good. Our protocol is also superior to the previous known algorithms in terms of routing overhead. The protocol also handles multiple and cooperative black nodes.