TRUST BASED DSR PROTOCOL FOR SECURE DATA TRANSMISSION IN MANET

Abstract

Security in Mobile Ad-Hoc Network is the most important concern for the basic functionality of network. Routing is an important component in mobile ad hoc networks and several routing protocols in MANET, which are affected from attacker/malicious nodes. Dynamic Source Routing (DSR) is one of the most suitable routing protocols for the MANETs and it is more vulnerable to gray hole, black hole attack by the malicious nodes. This project presents Trust-based Dynamic Source Routing Protocol (TDSR) that enable a node to reason about trustworthiness of other node based on past interactions and recommendations also uses the concept of MDSR for initial transaction. Two contexts of trust are service and recommendation. Recommendation context rests on satisfaction value and satisfaction value depends on packet transmission rate and time taken to send packets. Service context rests on link weight, channel fading effect and satisfaction value. IDS maintain the service value and nearby nodes maintain the recommendation value. Based on the trustworthiness the data will send in a secured manner. For the new transaction, Intrusion Detection Systems (IDS) are used to detect the anomaly, and then reduce its trust value.