An enhanced intrusion detection system for routing attacks in MANET

A Mobile Ad hoc NETwork (MANET) is a network that expedites nodes to communicate each other in the absence of a fixed infrastructure. In recent years research issues for securing MANET is burgeoning as it finds use in variety of applications. Security of communication in this type of network is paramount for secure transmission. Routing attacks has drawn sizable consideration since it could cause the most devastating damage to MANET. Even though there prevail many intrusion response techniques to alleviate such critical attacks, existing system usually tries to isolate malicious nodes based on binary or naïve fuzzy response decisions. Binary responses outcomes in the unexpected network partition, causing additional damages to the network infrastructure and naïve fuzzy responses could lead to uncertainty in countering routing attacks in MANET. This paper targets on the replica attack in MANET. A serious repercussion of the device capture attack is the node replication attacks in which adversaries deploy a large number of replicas of the compromised/ captured nodes throughout the network. Replicated nodes have all legitimate security credentials and therefore can launch various insider attacks or even take over the network effortlessly. They are undeniably “Attack multipliers” and therefore are immensely catastrophic to the network. An efficient detection scheme named Sentinel Protocol is proposed for detecting replica attack in MANET. Detailed simulation studies have confirmed the efficiency and effectiveness of the proposed protocol.