NDLI: A reputation-based mechanism for isolating selfish nodes in ad hoc networks

Content Provider	IEEE Xplore Digital Library
Author	Refaei, M.T. Srivastava, Vivek DaSilva, L. Eltoweissy, M.
Copyright Year	2005
Description	Author affiliation: Bradley Dept. of Electr. & Comput. Eng., Virginia Univ., Alexandria, VA, USA (Refaei, M.T.; Vivek Srivastava; DaSilva, L.)
Abstract	For ad hoc networks to realize their potential in commercial deployments, it is important that they incorporate adequate security measures. Selfish behavior of autonomous network nodes could greatly disrupt network operation. Such behavior should be discouraged, detected, and isolated. In this paper, we propose a reputation-based mechanism to detect and isolate selfish nodes in an ad hoc network. The proposed mechanism allows a node to autonomously evaluate the "reputation" of its neighbors based on the completion of the requested service. The underlying principle is that when a node forwards a packet through one of its neighbors, it holds that neighbor responsible for the correct delivery of the packet to the destination. Our mechanism is efficient and immune to node collusion since, unlike most contemporary mechanisms for reputation-based trust, it does not depend on exchanging reputation information among nodes. We also explore various reputation functions and report on their effectiveness in isolating selfish nodes and reducing false positives. Our simulation results demonstrate that the choice of the reputation function greatly impacts performance and that the proposed mechanism, with a carefully selected function, is successful in isolating selfish nodes while maintaining false positives at a reasonably low level.
Starting Page	3
Ending Page	11
File Size	443464
Page Count	9
File Format	PDF
ISBN	0769523757
DOI	10.1109/MOBIQUITOUS.2005.7
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-07-17
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Intelligent networks Ad hoc networks Routing Computer science Computer security Electric variables measurement Spread spectrum communication Mobile communication Mobile ad hoc networks Collaboration
Content Type	Text
Resource Type	Article

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