EFFECTIVE INTRUSION DETECTION SYSTEM FOR AODV ROUTING PROTOCOL USING NETWORK SIMULATOR

Security is an important part for any communication structure. When protocol itself is prone to infectious and nodes are moving, then it is necessary to safeguard the communication channel to make secure communication. MANET's ad-hoc networks have no fixed infrastructure and freely moving node in the space. Security is a prominent challenge for ad-hoc network. In view of missing central authority, inadequate bandwidth, dynamic topology and open medium MANET's are exposed against different kinds of security attacks in network. Attackers attack MANET at various layers of its protocol stack. Since there is no competent routing protocol Network layer is most attacked. Also the watchdog mechanism provided is less effective and inefficient. The proposed will study influence on AODV protocol and watchdog mechanism of blackhole attack. Additionally we propose a method known as Neighbour Node Based Acknowledgement Intrusion Detection System (NNIDS) which works over principle of watchdog and pathrater. This method will find legitimate and secure way among source and destination utilizing neighbour node acknowledgement based technique, this component will handily recognize malignant nodes and shield the blackhole attack in MANET. The simulation has been carried out with variable Pause Time and node Speed and results show NNIDS is performing better every time in comparison to AODV with watchdog and intrusion