Malicious Node Detection in MANETs using Trust Based Approach

Mobile Ad-hoc Networks (MANETs) are decentralized wireless networks. The characteristics of MANETs are dynamic topology and a lack of fixed infrastructure. These features make them highly flexible and expose them to significant security vulnerabilities. To overcome these vulnerabilities, our energy composite trust model calculates a trust score for each node based on its packet forwarding behaviour and energy consumption. It also incorporates a direct mechanism for identifying flooding attacks by monitoring packet traffic rates. The proposed system was implemented and evaluated using the NS-3 simulator. Simulation results in NS-3 demonstrate that the proposed method effectively isolates malicious nodes.