Misbehaving nodes detection through opinion based trust evaluation model in MANETs

Authors:
Poonam;K. Garg;M. Misra
Affiliations:
Indian Institute of Technology, Roorkee, India;Indian Institute of Technology, Roorkee, India;Indian Institute of Technology, Roorkee, India
Venue:
Proceedings of the International Conference & Workshop on Emerging Trends in Technology
Year:
2011

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Abstract

Routing protocols are the binding force in mobile ad hoc network (MANETs) since they facilitate communication beyond the wireless transmission range of the nodes. However, the infrastructure-less, pervasive, and distributed nature of MANETs renders them vulnerable to security threats. In this paper, we propose a novel opinion based trust-aware routing protocol (OBTRP) for MANETs to protect forwarded packets from intermediary malicious nodes. In the proposed model, each node determines the trustworthiness of the other nodes with respect to behavior observed. It calculated the direct trust by the information obtained independently of other nodes and indirect trust information obtained via opinion of other nodes. Our trust model exploits information sharing among nodes to accelerate the convergence of trust establishment procedures, yet is robust against the propagation of false trust information by malicious nodes. We present simulation results which demonstrate the effectiveness of the proposed trust model scheme in a variety of scenarios involving nodes that are malicious with respect to both packet forwarding and trust propagation.