Implementation and Prevention of DOS Attack in Malicious Environment on AODV Routing Protocol

The Mobile Ad-hoc Network (MANET) is a concept base on wireless medium and straightforward to establish and having dynamic topology. The mobile Ad-hoc networks are exposed to various networks attacks because MANET operational environment is open and dynamic or live. MANET uses the Routing protocols for data transfer. Malicious node is the one type of mobile node but its work is completely different compared to normal Mobile nodes. Malicious nodes have capability to change or remove Routing Information. Now a day’s attackers are trying to effect servers and networks with DOS (Denial of Service)attack. We have shown a implementation of DOS attack process and it prevention process in AODV routing environment. Malicious or selfish node carries attacks on the networks so it directly effects to the routing Performance. We have measured throughput, end to end delay and packet Delivery ratio.