Engineering Research Publication
Mobile ad-hoc NETwork (MANET) is an independent network which consists of many nodes and these nodes use wireless links to communicate with each other. A mobile ad hoc network due to its open nature, dynamically changing topology, lack of infrastructure and central management is vulnerable to various attacks. There is an attack which causes many serious threats to the network and it is known as Sybil attack. In other words a 'Sybil attack' in network security is an attack wherein a reputation system is subverted by forging identities in peer to peer network.