A Dynamic Trust Model for Mobile Ad Hoc Networks

  • Authors:
  • Affiliations:
  • Venue:
  • FTDCS '04 Proceedings of the 10th IEEE International Workshop on Future Trends of Distributed Computing Systems
  • Year:
  • 2004

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Abstract

This paper introduces a trust model for mobile ad hocnetworks. Initially each node is assigned a trust level. Thenwe use several approaches to dynamically update trust levelsby using reports from threat detection tools, such as IntrusionDetection Systems (IDSs), located on all nodes inthe network. The nodes neighboring to a node exhibitingsuspicious behavior initiate trust reports. These trust reportsare propagated through the network using one of ourproposed methods. A source node can use the trust levels itestablishes for other nodes to evaluate the security of routesto destination nodes. Using these trust levels as a guide, thesource node can then select a route that meets the securityrequirements of the message to be transmitted. This paperdemonstrates important concepts for establishing a collaborative,dynamic trust model and for using this model asan example to enhance the security of message routing inmobile ad hoc networks.