International Journal of Emerging Technology and Advanced Engineering (IJETAE)
Mobile ad-hoc network is a temporary wireless network. It is a network which is self-configuring in which nodes moves freely and continuously. As a result the network topology also changes dynamically. Such networks are highly dynamic in nature and nodes communicate without a proper infrastructure. Various routing protocols employed by these nodes have various loopholes and hence vulnerable to attacks. One such attack is a black hole attack. A black hole attack in MANET is a malicious node that falsely replies for any route requests without having any active route to specified destination and drops all the packets received from other nodes.