Date Added: Feb 2012
The Mobile Ad-hoc NETwork (MANET) is highly vulnerable to security attacks compared to wired network and infrastructure based wireless network due to the dynamic changing and decentralized network topology. MANET has no clear line of defense, so, it is accessible to both legitimate network users and malicious attackers. In the presence of malicious nodes, one of the main challenges in MANET is to design the robust security solution that can protect MANET from various attacks. In this paper the cluster head is elected based on the clique and cluster head computation method to monitor the entire process in the cluster. The networks are particularly vulnerable to Distributed Denial of Service (DDoS) attacks launched through compromised nodes or intruders.