Mitigating DoS Attack in MANETs Considering Node Reputation with AI

Abstract

Mobile Adhoc Network (MANET) is a decentralized and dynamically adoptable network. It is infrastructure less and hence can be used where a fixed configuration is not possible or required. MANETs have various real-life applications and hence have gained the attention of research community. Security is an integral part of any computer network system and MANETs are no different. This paper focuses on solving DoS attacks in MANET and shows that a general classification model might fail to identify this kind of attacks as these models fail to differentiate between network errors and a real DoS attack. A reputation-based node classification scheme is proposed to improve identification of real DoS attacks versus any other cause that might not be an attack. Results showed that our proposed reputationbased approach when integrated with any classifier increases its accuracy by around 3.25%. Further, the combined model is able to block real DoS attacks and allow any other cause which is not an attack.

Finding Packet Dropper and Collecting Missing Packet due to Packet Dropping Attackers in Mobile Adhoc Network Using Divide and Conquer Algorithm

“…One of the available algorithm to monitor the dropping of packet is called the comfy knowledge method [4] which compute the cause of packet dropping. Another methods determines the packet drop causes of overflow and lack of strength [8].…”

“…Due to the limitation and design challenges of MANET this network could able to create and support for the instant communication application development for communication like military, disaster management , emergency services [2]. While making communication among the nodes the packet may leads to fails on reaching to the destination node due to internal nodes parameter lags like power failure, nodes mobility ,insufficient buffer space and external attackers like DDoS attacks finally all these factors affects the overall performance of the MANET throughput and other factors [3,4]. Packet drops due to system failure is neglected where as other factors various mechanism proposed to overcome the packet drop problems but still the new attacks are forming for packet dropping attacks and research are continuing to overcome the new attacks, all these because of lack of physical protection mechanism and reliable medium access mechanism in routing functions in MANET [5][6][7].…”