Secured Intrusion Detection System in Mobile Ad Hoc Network using RAODV

Wireless Mobile ad-hoc network (MANET) is an emerging technology and has great strength to be applied in critical situations like battlefields and commercial applications such as building, traffic surveillance. MANET is infrastructure less, with no any centralized controller exist and also each node contain routing capability, Each device in a MANET is independently free to move in any direction, and will therefore change its connections to other devices frequently. So one of the major challenges wireless mobile ad-hoc networks face today is security, because no central controller exists. MANETs are a kind of wireless ad hoc networks that usually has a routable networking environment on top of a link layer ad hoc network. Ad hoc also contains wireless sensor network so the problems is facing by sensor network is also faced by MANET. While developing the sensor nodes in unattended environment increases the chances of various attacks. The Intrusion Detection is one of the possible ways in recognizing a possible attacks before the system could be penetrated. The encryption and authentication solution, which are considered as the first line of defense, are no longer sufficient to protect MANETs. Therefore, Intrusion Detection Systems (IDSs) is needed to be the second line of defense to protect the network from security problem. There are many security attacks in MANET and DDoS (Distributed Denial of service) is one of them. In this paper we discussed some attacks on MANET and DDOS also and provide the security against the DDOS attack.