GradeTrust: A Secure Trust Based Routing Protocol For MANETs

Trust-based secure routing in MANETs has attracted lot of research attention worldwide. It is effective in providing secure routing by isolating malicious nodes and other overheads from MANETs. This paper proposes, GradeTrust, a secure routing protocol for MANETs based on the trust levels of network nodes. It uses trust to isolate black hole routing attacks thus offering secure routing of data traffic as well as improved packet delivery ratio. Preliminary simulation results have shown that trust compromise and packet delivery ratio is better in GradeTrust compared to traditional routing protocols,…

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Detecting Colluding Blackhole and Greyhole Attacks in Delay Tolerant Networks

Detecting Colluding Blackhole and Greyhole Attacks in Delay Tolerant Networks DOWNLOAD PROJECT SYNOPSIS Delay Tolerant Network (DTN) is developed to cope with intermittent connectivity and long delay in wireless networks. Due to the limited connectivity, DTN is vulnerable to blackhole and greyhole attacks in which malicious nodes intentionally drop all or part of the received messages. Although existing proposals could accurately detect the attack launched by individuals, they fail to tackle the case that malicious nodes cooperate with each other to cheat the defense system. A scheme is proposed called…

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