Abstract: Mobile Ad-hoc Network (MANET) is a kind of wireless network having more than hundreds nodes interconnected in open nature field. A strong purpose may lead it as one of emerging and popular research field for researchers. Wireless sensor a network is widely used for real time submission at military combat zone, nuclear power plants etc. A mobile node consist small data storage capacity, low power battery, low bandwidth and low computational power. Due to open nature communication medium, it becomes more vulnerable to outside attacks. Security threats are classified in two category passive and active attacks. In passive attack attacker can listen the packets in the network while in the active attack attacker can also modify the packet contents. Subsequently, little attack may lie into both categories. Flooding attack is such kind of attack which aims to disrupt the network by draining resource capability. Here, Attacker communicates worthless messages formally known as false packet to increase network traffic and make target node busy in useless activity. The complete work observes that, Flooding attack does not require any study about network vulnerability. Furthermore, the major thread in way of development is challenges in sensor networks. Poor resources availability is the major weakness of sensor network. Attacker may use this weakness to disrupt the network. Subsequently, Power draining is the major thread; where attacker not only exhausts the network traffic but also degrades the life of node as well network. The objective of this study is to detect and prevent wireless sensor networks from unwanted power draining due to Flooding attack. Here, Targeted Flooding through high battery capacity node has been used to deploy Flooding attack in ad-hoc network. Subsequently, energy consumption and capacity observation technique has been used to detect malicious node(s). Furthermore, prevention method forcefully shutdown malicious nodes and transfer communication from another route to avoid power draining. Energy consumption before attack, during attack and after prevention along with throughput and packet delivery ratio is used to measure performance of proposed technique. NS-2 simulator has been used to simulate and evaluate the results of proposed solution.

Keywords: MANET, Flooding, DYMO, WSN.