DETECTING AND ISOLATING BLACK-HOLE ATTACKS IN MANET USING COUNTER BASED TROLLING TECHNIQUE

Abstract

Mobile Ad hoc Network (MANET) is a part of wireless networks that gives different applications in various fields. MANET's security had gotten perhaps the greatest issue in fields of networks. MANET is powerless against various kinds of attacks that influence its usefulness and availability. The black hole attack is viewed as one of the most perilous dynamic attacks which impedes the presentation and dependability of the network because of the dropping of all approaching data packets by the malicious node. The black hole attack intends to deceive each node in the network that needs to speak with another node by guaranteeing that it generally has the best path to the objective node. AODV is a responsive routing protocol which has no method to identify and forestall black hole attack in to the network. In this examination work, we improved the AODV routing protocol utilizing another lightweight method that utilizes hop count and trolling to recognize and detect single and multiple black hole attack. In this research work we provide the security scheme against single and cooperative black hole attack in MANET. The blackhole attack is packet dropping attack behaves like normal node at the time of connection establishment and after forward false reply of destination to sender drops all the data packets. In this attack one or more than one malicious nodes create a secure environment with the presence of other normal nodes. The proposed IDS (Intrusion Detection System) is identified the nodes those are not forwarded the data packets continuously abut node exist in network and provides the secure communication in dynamic network.