Author(s): Prabhu.K, Gowtham, Dr. L.M.Nithya

Mobile Ad hoc Networks (MANETs) are a self configurable, Wireless and infrastructure independent network for mobile devices. MANETs have grown to be a challenging and attracting choice for disaster-response and military operations. Due to its ad hoc behaviour of networks, it permits fast operation and doesn’t necessitate pre-defined network infrastructure. In such networks anonymous communications is a challenging topic which permits to exchange messages over communication parties on a network by without disclosing their identifiers of network to each other or to third parties. This type of Anonymous communications can be revealed by means of traffic analysis. Traffic analysis is an advanced approach which exposes relationships between users of anonymous communication systems. In this paper several anonymity enhancing techniques are surveyed for the protection of anonymity communication in mobile ad hoc networks (MANETs). The present survey includes various attacks and its corresponding protocols used for mitigating anonymous communication in MANETs. Finally comparative measures of each method are presented which provides the significance and limitations of each protocol on various attacks in mobile ad hoc networks (MANETs).