SECURE INTRUSION DETECTION SYSTEM FOR MOBILE AD HOC NETWORK

Abstract

Security is a primary concerns when protected communication between mobile nodes in a averse environment is the requirement. MANETs are more susceptible to be attacked as compared to the wired networks. These vulnerabilities are due to the operating principles of the MANET which cannot be changed. Securing MANET is equally important as securing fixed wired networks. Certain level of security can be obtained from the existing solutions. However, these solutions are not always necessarily suitable for wireless networks. Mobile ad hoc networks (MANETs) combine wireless communication with a high degree of node mobility. Limited range wireless communication and high node mobility means that the nodes must cooperate with each other to provide essential networking, with the underlying network dynamically changing to ensure needs are continually met. An IDS based on anomaly based intrusion detection that works by checking the behavior of the nodes was proposed to overcome some of the attacks like black hole, gray hole and flooding attacks. Generally the malicious nodes demonstrate a different behavioral pattern of all the other normal nodes. So the specified approach where a Data Transmission Quality (DTQ) function is used to determine the behavior of the nodes asmalicious or legitimate is used.