One of the most important requirements to establish communication among nodes in MANET (Mobile Adhoc Network) is cooperation of nodes among each other. In the presence of malicious nodes, this requirement may lead to serious security issues. In some cases such nodes may even disrupt the routing process. Hence preventing or detecting malicious nodes causing gray hole or collaborative black hole attacks is a challenge. Our paper attempts to solve this issue by implementing security using the Cooperative Bait Detection Scheme (CBDS) in DOA (DSR over AODV routing mechanism. This work integrates the merits of both proactive and reactive type of MANET routing protocols. DOA (DSR over AODV) is a hierarchical routing protocol developed from the combination of DSR and AODV routing protocols. It is used in environments where overcoming the routing issues that occur in MANETs due to increase in network size is necessary. Our CBDS method adopts a reverse tracing technique to help in achieving the expected solution.
No. of Downloads :