Recent survey on efficient trust management in mobile ad hoc networks

A Mobile Ad hoc Network is a self-organized network. The nodes which are within its radio range can have a direct communication if not it use an intermediate node for transmitting data. In MANET the nodes are wireless and fully distributed but they do not have any fixed infrastructure like base station or access points. MANET is a dynamic topology that is in this type of network the nodes will move randomly at any location with different speed at unpredictable time, so that the trust relationship is distributed among each node. The trust management is a tricky task; here the trust measures a subjective belief of a node. In a network the trust among nodes are very important for communication. The trust of a node is affected by the selfish and malicious nodes. By measuring some of the parameters like connectivity, energy, unselfishness and healthiness the malicious and the selfish nodes are predicted. In this network the secure routing is performed by the development of trust management protocols which yields the minimization of trust bias and it maximizes the application performance. This paper surveys different trust based protocols which obtains the trusted routing in malicious and selfish affected nodes.