An efficient scheme for detecting malicious nodes in mobile ad hoc networks

Authors:
Jongoh Choi;Si-Ho Cha;JooSeok Song
Affiliations:
Department of Computer Science, Yonsei University, Seoul, Korea;Dept. of Information and Communication Engineering, Sejong University, Seoul, Korea;Department of Computer Science, Yonsei University, Seoul, Korea
Venue:
ICISC'06 Proceedings of the 9th international conference on Information Security and Cryptology
Year:
2006

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Abstract

This paper proposes a scheme capable of effectively detecting a malicious node that normally operates during determination of a route over a mobile ad-hoc network (MANET) but modifies or drops data during data transmission or reports wrong information regarding a normal node, using a report message and a report table that list reporter nodes and suspect nodes. In the existing schemes, a malicious node that provides wrong information can be easily identified but cannot be removed from a network. To solve this problem, the proposed scheme determines a suspect node as a malicious node when more than k lists of reporter nodes and suspect nodes are recorded in the report table in case where k malicious nodes are over the network. The proposed scheme is applicable to both DSR and AODV routing.