The mobile ad hoc networks (MANETs) encompassed of a dynamic topology and open wireless medium may lead to MANET affected by several security liabilities. MANET could be set of restricted vary wireless nodes that perform in a cooperative manner thereby increasing the overall range of the network. The performance of ad hoc networks depends on the supportive and trust environment of the distributed nodes. To enhance security in ad hoc networks, it is important to evaluate the trustworthiness of alternative nodes without centralized authorities. In this paper, a study was made based on the trust models such as direct Trust, Indirect Trust and Analytic Network Process (ANP). These trust models are incorporated to reflect the trust relationship`s complexity and uncertainty. Based on the trust factors, the selection of the trusted nodes is obtained by using methods like direct Trust, Indirect Trust, and Analytic Network Process. ANP is used for making trust decisions which replace the traditional methods like direct Trust and Indirect Trust methods. Hence from the study, we analyzed that the selected nodes obtained by using the ANP decision theorem eliminate the malicious nodes and helps to protect the network from any internal attacks.

MANET, Trusted Node, Direct Trust, Indirect Trust, Analytic Network Process

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