Intrusion Detection Systems in Mobile Ad Hoc Networks: State of the Art

Mobile Ad Hoc Networks (MANETs) are more vulnerable to different attacks. Prevention methods as cryptographic techniques alone are not sufficient to make them secure; therefore, efficient intrusion detection must be deployed and elaborated to facilitate the identification of attacks. An Intrusion Detection System (IDS) aims to detect malicious and selfish nodes in a network. The intrusion detection methods used normally for wired networks can no longer adequate when adapted directly to a wireless ad-hoc network, so existing techniques of intrusion detection have to be changed and new techniques have to be determined to work efficiency and effectively in this new network architecture of MANETs. In this paper we give a survey of different architectures and methods of intrusion detection systems (IDSs) for MANETs accordingly to the recent literature.