A Comparative analysis of Network layer threats & defense mechanisms of MANETs
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Abstract
Mobile ad hoc network (MANET) security has become the focus of vast research efforts. Motivated by the exclusive and substantial difficulties of providing security arising from the dynamic nature of MANETs, many security schemes have been proposed. Rather than trying to encompass the intact field of Ad Hoc security, this paper focuses on networks layer attacks. We perform a vulnerability analysis of protocol to identify unsolved threats to the algorithm, such as, blacks holes, wormholes, Modification, Sybil and rushing attacks. We then compare this vulnerability analysis to schemes that have been proposed to battle the identified threats . The comparison between various secure routing protocols has been made on the basis of security services and security attacks. From the survey it is fairly clear that Routing protocols are vulnerable to various network layer attacks. A multi defence secure routing protocol is still vital to fulfil the essential security services and provide solution against various attacks.
Keywords: MANETs; AODV; SAODV; security attack; Security Services.
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