Design & Implementation of Black Hole Attack and Prevention using AODV for Generalized network

Abstract

: AODV is a routing protocol that is designed for MANET and it is using the on-demand
method to establish the routes between nodes .The main benefits of this protocol is establishments
of desired routes to the destination. when the source node requires and it keeps the routes as long
as they are needed . A black hole attack is a common attack that can be accured in AODV
protocols. In this kind of attack, the attacker can uses one or more malicious nodes which
advertise themselves in the network by setting a zero metric to all the destinations causes all the
nodes towards the data packets to these malicious nodes. The AODV is vulnerable against the
black hole attacks due to having centric property. Where all the nodes to have share their routing
tables for each other. A black hole attack is a severe attack that can be easily employed against
routing in mobile ad-hoc networks. A black hole is a malicious node that falsely replies for any
route requests without having active route to specified destination and drops all the receiving
packets. The Proposed Method PL2 has the modification done in AODV protocol for ensuring the
security against the Black hole attack using NS2 Simulation.