Anonymous Routing Protocols for MANETs-A Survey

A Mobile Ad Hoc Network (MANET) is a selforganizing network of mobile nodes. In most cases the nodes communicate to each other based on public identities. But while considering application such as military, nodes should not expose their identities and node activities must not be visible. MANET s use anonymous routing protocols that hide node identities and/or routes from outside intruder or attackers in order to give anonymity protection. Although a number of anonymous secure routing protocols have been proposed, the requirement is not fully satisfied. The existing protocols are susceptible to the attacks of routing packets or denial-of-service (DoS) broadcasting, even though node identities are sheltered by pseudonyms.