Defending Against Collaborative Attacks by Malicious Nodes in MANETs: A Cooperative Bait Detection Approach
Keywords:
MANET‟s, malicious nodes, dynamic source routing, CBDS, grayhole/blackhole.Abstract
In mobile ad hoc networks (MANETs), an essential requirement for the foundation of
communication among nodes is that nodes should coordinate with one another. In the presence of malicious nodes, this
requirement may lead serious security concerns; for instance, such node may disturb the routing process. In this context,
preventing or detecting malicious nodes launching grayhole or collaborative blackhole in challenge. This project
attempts to determine this issue by designing a dynamic source routing (DSR)- based routing mechanism, which is
referred to as the cooperative bait detection scheme(CBDS), that coordinates the advantages of both proactive and
reactive defense architectures. Our CBDS system implements a reverse tracing technique to help in achieving the stated
goal. Simulation results are provided, showing that in the presence of malicious-node attacks, the CBDS outperforms the
DSR, 2ACK, and best-effort fault-tolerant routing (BFTR) protocols (chosen as benchmarks) in terms of packet delivery
ratio and routing overhead (chosen as performance metrics).
