Ad-hoc networks are highly vulnerable to the attacks due to the dynamic nature of the network topology, lack of centralized management and cooperative algorithm. Nodes in the ad-hoc network are responsible to transmit packets to other nodes. One of many different kinds of attacks, a node may experience the exhaustion of power by consuming its batter power. Routing protocol controls the packet transmission over the network and calculates the routing path for transmission. The predefined static routed path is limited in ad-hoc network, and nodes have limited energy that is depleted due to transmission. Sleep deprivation attack constantly drops the power source on a particular node until the node gets shutdown. We have proposed an effective model named Honey-bee model to enhance Ad-hoc On-Demand Distance Vector Routing algorithm. Hierarchical clustering method is used for the formation of the cluster of nodes. Based on this approach, each node is assigned with a cluster that prevents the attack. We have simulated in ns2 tool compared results with other on-demand routing protocol such as Power Aware Routing Protocol, Dynamic Source Routing, Flow-State extensions to Dynamic Source Routing and AODV.
Mobile ad hoc network (MANET) is a group of mobile (or temporarily stationary) nodes which provides the ability to stream voice, data, and video between arbitrary pairs of devices utilizing the others as relays to avoid the need for infrastructure. There are many techniques which are employed in order to provide robust MANET capability like self-forming, link adaptation, transparent IP Networking, and multicast support. Its rapidly changing network topology, which is unpredictable over time, makes MANET vulnerable to wide range of attacks. It is very tedious to detect some attacks when it becomes a part of network. Ad hoc ondemand distance vector (AODV) is a popular reactive routing protocol but exposed to well-known packet dropping attack, where a malicious node intentionally drops packets without forwarding them to destination. In this paper, we discuss the security mechanisms, namely data routing information (DRI), cross-checking, and retard-mode operations, to defend against packet dropping attack in MANET with results simulated in ns-2 to show the improvement in packet delivery ratio.
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