%0 Journal Article
%T Malicious Node Detection System for Mobile Ad hoc Networks
%A Rajaram.A
%A Dr. S. Palaniswami
%J International Journal of Computer Science and Information Technologies
%D 2010
%I TechScience Publications
%X In this paper, we develop a trust based security protocol based on a MAC-layer approach which attains confidentiality and authentication of packets in both routing and link layers of MANETs. In the first phase of the protocol, we design a trust based packet forwarding scheme for detecting and isolating the malicious nodes using the routing layer information. It uses trust values to favor packet forwarding by maintaining a trust counter for each node. A node is punished or rewarded by decreasing or increasing the trust counter. If the trust counter value falls below a trust threshold, the correspondingintermediate node is marked as malicious. In the next phase of the protocol, we provide link-layer security using the CBC-X mode of authentication and encryption. By simulation results, we show that the proposed MAC-layer security protocol achieves high packet delivery ratio while attaining low delay, high speed and overhead.
%K MANETs
%K MAC-Layer
%K Security Protocol
%K Encryption
%K authentication
%K Packet Delivery
%K Overhead
%K High speed.
%U http://www.ijcsit.com/docs/vol1issue2/ijcsit2010010208.pdf