What is it about?

This publication focuses on the critical issue of security in Mobile Ad hoc Networks (MANETs). MANETs are decentralized networks comprising mobile nodes connected via wireless links, without any central infrastructure. However, their dynamic nature, lack of centralized control, and open medium make them highly vulnerable to routing attacks. One notable attack is the Sybil attack, where malicious nodes steal genuine identities, mimic them, and drop packets, thereby compromising network performance. To address this challenge, the authors propose a Sybil attack detection and prevention (SDP) mechanism, serving as an intrusion detection and prevention system for MANETs. The SDP mechanism employs historical profile analysis and a blocking-based approach to monitor the behavior of nodes in real-time and assess their past activities. The authors evaluate the proposed mechanism using two distinct scenarios implemented in NS-2, assessing packet delivery ratio, normal routing load, delay, and throughput. Moreover, they perform confusion matrix analysis to gauge detection accuracy, yielding impressive true positive ratios of 90.7% and 97.85% for the SDP-I and SDP-II scenarios, respectively.

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Why is it important?

MANETs play a crucial role in scenarios where centralized infrastructure is impractical, such as disaster response operations or military deployments. However, the absence of centralized administration and dynamicity of MANETs render them highly susceptible to various routing attacks, including the Sybil attack. Ensuring the security of communication between nodes is vital for maintaining the integrity and reliability of MANETs. This publication addresses the significance of safeguarding MANETs from Sybil attacks, proposing an effective detection and prevention mechanism.

Perspectives

This article offers a comprehensive solution to enhance the security of MANETs by focusing on the detection and prevention of Sybil attacks. By devising the Sybil attack detection and prevention (SDP) mechanism, the authors provide an essential tool for safeguarding MANETs against malicious nodes that impersonate genuine ones and disrupt network performance. The proposed mechanism utilizes historical profile analysis and a blocking-based approach to monitor node behavior. By implementing and evaluating the mechanism in two distinct scenarios, the authors demonstrate its effectiveness in terms of packet delivery ratio, routing load, delay, and throughput. The achieved true positive ratios validate the reliability of the proposed system. This research contributes significantly to the development of robust routing protocols, bolstering the resilience and security of MANETs.

Mr Daniel Tesfay Gebreegzeabhear
Hawassa University

Read the Original

This page is a summary of: An Intrusion Prevention System embedded AODV to protect Mobile Adhoc Network against Sybil Attack, August 2021, ACM (Association for Computing Machinery),
DOI: 10.1145/3484824.3484915.
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