Bluff-Probe Based Black Hole Node Detection and prevention

Security in wireless ad hoc network (WAN) is very important issue. Due to dynamic topology and mobility of nodes, Wireless Ad hoc Networks are more vulnerable to security attacks than conventional wired and wireless networks. Nodes of Wireless Ad hoc Network communicate directly without any central base station. That means in ad hoc network, infrastructure is not required for establishing communication. To provide security in small networks is easy as compare to large networks. For our convenience, we divide large network into number of zones. Therefore attacks in WAN are very frequent than other networks. In this research paper we are describing black hole attack which is easy to launch in wireless ad hoc network. Black hole attack is referred to as a node, dropping all packets and sending bogus information that it has shortest path between source and destination. In this paper we are implementing Secure-ZRP protocol which can be used to prevent black hole attack in zones or outside the zones. We evaluated performance in Qualnet simulator. Our analysis indicates that S-ZRP is very suitable to stop this attack.