Abstract: Mobile phones are most common way of communication and accessing internet based services. A mobile ad-hoc network (MANET) is a self-configuring infrastructure less network of mobile devices connected by wireless. Essentially ad hoc network is a collection of nodes communicating with each other by forming a multi-hop network. Each must onward traffic unconnected to its own use and consequently be a router. The primary aim is a MANET is to build the each device to incessantly preserve the information necessary to correctly route traffic. Mobile Ad-Hoc Network (MANET) is often susceptible to security attacks due to its features of open medium, limited physical security, dynamic changing topology and cooperative algorithms, lack of centralized monitoring and organization point, energy constrained operations and often lacks of a clear line of defense.