ITCA, an IDS and Trust Solution Collaborated with ACK Based Approach to Mitigate Network Layer Attack on MANET Routing

The feature of Dynamic topology configuration of MANET reciprocates the security constraints and bring in many security threats that hamper the routing and time bound delivery of packets. Many security schemes had been proposed to secure MANET routing and improve its efficiency. The solutions proposed by existing systems are defined in one dimension so that the targeted attack can be fixed up, but that might create flaws in other dimension or introduce new attack. So it is necessary to create a multidimensional solution that empowers the routing process to become inherently secure rather than defending one particular attack. The selfish or maliciously behaving nodes in the network are the key players in launching the attacks and disrupting the routing process. In this paper, the proposed consolidated approach named, IDS and Trust solution Collaborated with Ack based approach (ITCA), performs identification of attack, isolation of misbehaving nodes and control behavior of nodes in the network. This enables the routing process to be more robust by resisting the malicious nodes from being the part of a route, avoid attack formation and thus supports to improve the efficiency. Even though the malicious nodes are isolated, the proposed method allows them to be sender for transmitting their own data, but under controlled environment defined by IDS so that the attempt to launch DOS attack can be avoided. The reconsideration of isolated node that to under controlled IDS environment in collaboration with Trust and improved ACK based scheme is key behind proposed multidimensional method, ITCA. Further the method is integrated with AODV and extensive experimentation is done based on raising number of malicious nodes in the network to measure its effectiveness and efficiency.