Preface

Mobile wireless ad hoc networks (MANETs) are non-concentrated wireless networks that can be formulated without the need for any preexisting infrastructure in which every node can behave as a router. For transferring information to nodes that are out of its transmission range, the node should detect its local neighbors and through them, it will do transmission. MANET’s characteristics like open medium, dynamic topology, lack of clear lines of defence makes the network so vulnerable to various attacks. One of the best and popular routing protocols that is used in MANET is ad hoc on-demand distance vector routing (AODV). AODV is gravely influenced by a famous attack in which a malicious node sends a forged route reply message that it has a short and fresh route to the destination node; this attack is known as black hole attack. In this book, MANET performance against both single and multiple black hole attacks has been investigated. And then intrusion detection system AODV routing protocol (IDSAODV) that is presented by Dokurer at 2006, has been implemented on the network. The result are analysed through different network parameters: total drop packets, end-to-end delay, packet delivery ratio, and routing request overhead, using NS-2.35. The results demonstrate IDSAODV solution method which was presented for the single black hole attack before also can be used effectively for reducing total drop packets and improving packet delivery ratio versus multiple black hole attacks. But, this solution method does not have considerable effect to improving end-to-end delay and routing request overhead. This testing only used UDP packets and did not test this protection when TCP packets are in use.