Trust Based Routing In wireless sensor Network
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This document discusses trust based routing in wireless sensor networks. It describes the characteristics and applications of sensor networks, and different types of attacks they face including passive attacks like traffic analysis and active attacks that aim to modify or fabricate routing information. It then proposes a trust based routing model for sensor networks that calculates direct trust between neighboring nodes based on their packet forwarding behavior, and propagates this trust information through route requests to enable computation of trust beyond single hops. This model aims to secure routing against active attacks in infrastructure-less sensor networks.
Trust Based Routing In wireless sensor Network
- 1. Trust Based Routing In wireless sensor Network
- 2. About Sensor Network Characteristics: Applications: Temporarily formed Military battlefield Nodes act as routers networks. Infrastructure-less Personal Area Networks Limited resources Disaster and rescue wireless medium operation
- 3. Attacks on Wireless Networks Passive attacks Do not change the routing information Listen to get valuable information Active attacks Use its energy to manipulate the routing information
- 4. Passive attack passive attack "attempts to learn or make use of information from the system but does not affect system resources" Traffic analysis each message is encrypted because it is not important whether the data is readable(understandable) to the attacker. Here, the adversary attempts to find patterns in the communication between two node, which might allow the adversary to derive certain assumptions based on these patterns.
- 5. Passive attack Traffic analysis Attacker Node Node
- 6. Active Attack Active attacks include security threats in which an node tries to manipulate code or data while it is transmitted between nodes. The most common examples of this kind of attack are alterations, in which an data is deleted or tampered with by an intruder .
- 7. Active Attacks Modification: Malicious node can modify routing information Fabrication: Generating false routing message Impersonation: Initiate attack by masquerading as another node
- 8. Active attack A B C Malicious Node
- 9. Existing Security Solutions Intrusion prevention Encryption, authentication. Nodes are required to have pre-shared keys or digital certificates. Central trust authority or pre configuration is not practical for ad-hoc networks
- 10. Dynamic Source Routing (DSR) Protocol On demand protocol: route information discovered only as needed. Source routing: entire path to destination supplied by source in packet header. Procedure: •Route discovery •Route maintenance •Routing
- 11. Route Discovery . Route Request: Source broadcasts Route Request message for specified destination Intermediate node adds itself to path in message and forwards message toward destination A A,B A,B,C A,B,C,D A B C D E
- 15. DSR Based Model Trust Based Routing To compute the direct trust in a node. In doing so we measure the accuracy and sincerity of the immediate neighboring nodes by monitoring their participation in the packet forwarding. As soon as it hears its immediate neighbour forwarding the packet, the node checks the integrity of the packet by verifying it for requisite modifications. If the integrity check passes, it confirms that the node has acted in a benevolent manner and so its direct trust counter is incremented. Similarly, if the integrity check fails or the forwarding node does not transmit the packet, its corresponding direct trust measure is decremented.
- 17. Trust Propagation To propagate trust information beyond a single hop, piggyback the direct trust value of nodes along with the ROUTE REQUEST packets. Before forwarding a ROUTE REQUEST packet, appends the direct trust value of the preceding node from which it had received the ROUTE REQUEST packet. When the ROUTE REQUEST packet is propagated, it also spreads the trust information of other nodes in the network.
- 18. Trust Propagation Tba, Tax Tax A B Tcx, Tcx Tdc X C D Y Tex, Tfe Tex E F
- 19. References 1.TRUST-BASED ROUTING FOR AD-HOC WIRELESS NETWORKS , Asad Amir Pirzada., Amitava Datta, Chris McDonald School of Computer Science & Software Engineering, The University of Western Australia Crawley, WA 6009, Australia 2. An Intrusion Detection System for Wireless Sensor NetworksIlker Onat Ali Miri School of Information Technology and Engineering University of Ottawa, Canada e-mail: [email protected], [email protected] 3. Intrusion Detection Techniques for Mobile Wireless Networks ,Yongguang Zhang ,HRL Laboratories LLC, Malibu, California Wenke Lee,College of Computing, Georgia Institute of Technology E-mail: [email protected] Yi-An Huang,College of Computing, Georgia Institute of Technology E-mail: [email protected]
- 20. Thank you