Assessment of Security Vulnerabilities in MANET

As MANET is a mobile network, nodes are free to move, so it’s more prone to attacks. Attacks might be active or passive. Passive attacks listen to message transmission and obtain the secret information where as active attacks are able to change the transmission data. Active attacks involve message replay, fraud counterfeiting, message tempering, and denial of service. Security is the main concern in MANET. Here we are discussing on the MANET attacks and how security needed in MANET. Security depends on availability, authenticity, integrity, authorization, confidentiality, scalability and non reputation.