International Journal of Computer Applications
Ad hoc networks are infrastructure-less network designed for communication without aid of any centralized administration. An ad hoc network generally consists of fixed nodes. Another variation of ad hoc network is MANETs. MANETs consists of mobile nodes rather than fixed nodes. MANETs is self-configuring network of mobile nodes that can be formed anytime and anywhere. Due to dynamic nature of wireless medium, unpredictable topological changes, mobility and limited resource constraints, at network layer MANETs routing protocols poses various security challenges.