Mobile ad hoc network (MANET) is defined as a self-configuring infrastructureless network used
for communication by wireless links with the support of mobile devices. A MANET is referred to
as a wireless network with independent nodes moving freely with respect to each other. Due to
the independent free moves of nodes a huge amount of packet data loss occurs in transmitting
the packet from source to destination. The risk of node misbehaviour is extremely high. The
unsecured ad hoc network environment is initiated due to the active nature of networks and node
mobility. In addition the task of key management is more complex in ad hoc network. Due to the
nature of free moving characteristics MANET faces improper node cooperation. The main reason
behind ineffective node cooperation is presence of malicious or selfish nodes. Moreover the
existence of malicious unauthenticated nodes causes insecure communication. Hence the proposed
system aims in the development of proper node cooperation malicious node detection and secure
communication in MANET.
