ABSTRACT: A Mobile Ad Hoc Network is a kind of wireless network which is a self configuring network of mobile routers connected by wireless links. Mobile Ad-Hoc Network (MANET) has dynamic topology. Self configurability and easy deployment feature of the MANET resulted in numerous applications in this modern era. The main focus of this paper is a survey of security factors and critically analyze by most of the routing protocols which are reported in the available literature. This will help in having a wider understanding of the problem domain and can also be used to develop or some new or to extend already proposed schemes. Hence MANET does not have definite topology which are intended to join in the network can come join at anytime and they leave from the network if they do not want to be with network. (ie) There is no accountability of network nodes in MANET. The absence of centralized controller will lead to a very big security issue among nodes. The main focus of this paper is survey about the security issues about the nodes
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