Abstract: Wireless sensor network is a network which is having sensors used for communication. It plays a vital role in today’s world. The major parts of WSN are Mobile Adhoc Network (MANETs). MANET is having mobile platforms and is freely moving. In MANET the connectivity nodes changes frequently. The MANET network thus needs to be authenticated, where authentication is a form of authorization which gives access to system based on identity.

Keywords: Mobile Adhoc Network (MANETs), On-demand routing protocols, security Mechanisms, Anonymous protocol for MANETs, security attacks.