Cooperative Bait Detection Scheme (CBDS) To Avoid the Collaborative Attacks of Nodes in MANET

With no dwindling in the use of wireless communication and a corresponding speedy proliferation of research in mobile technology, Mobile Adhoc Network (MANET) have been widely used for various applications such as military crisis operations and emergency rescue operations. The infrastructure-less nature and the dynamic topology features of MANET makes these networks highly vulnerable to various security issues like exploiting vulnerabilities of routing protocols and injecting harmful packets in the network etc. These threats deteriorate causes severe damage to the network. The challenge is how to prevent these security threats in MANETs. In this paper, based on DSR protocol, we propose a detection scheme called the Cooperative Bait Detection Scheme (CBDS), which aims at detecting and preventing malicious nodes launching gray hole/collaborative black hole attacks in MANETs. In this scheme, it integrates the proactive and reactive defense architecture and randomly cooperates with a stochastic adjacent node. By using the address of an adjacent node as a bait destination address to bait malicious nodes to send a reply message (RREP) and strange nodes are detected using a reverse tracing technique thereby prevents and ensures security.