International Journal of Computer Applications
MANETs are dynamic Peer-To-Peer networks, which employ multi-hop information transfer without requiring an infrastructure. Due to their nature, they have unique security requirements. Traditional security mechanisms used in infrastructure networks may be inapplicable to MANETs. For example, the dynamic and transient nature of MANETs can result in constant changes in trust among nodes. MANETs suffers from not only the vulnerabilities as their infrastructure counterparts, but also peculiar threats and attacks (e.g., sleep deprivation, selfish misbehaving and Denial of Service (DoS) attacks) caused by unique characteristics of MANETs. Also, once a route is formed, any node in the route may turn malicious and may refrain from forwarding packets, modify them before forwarding or may even forward to an incorrect intermediate node.