Abstract
Security is an essential requirement in mobile ad hoc networks to provide protected communication between mobile nodes. Due to unique characteristics of MANETS, it creates a number of consequential challenges to its security design. To overcome the challenges, there is a need to build a powerful, multifeatured security solution that achieves both broad protection and desirable network performance. MANETs are vulnerable to various attacks, blackhole, is one of the possible attacks. Black hole is a type of routing attack where a malicious node advertise itself as having the shortest path to all nodes in the environment by sending fake route reply. By doing this, the malicious node can deprive the traffic from the source node and can be implemented as a denial-of-service attack where the packets can be dropped later on. In this paper, a solution is proposed to identify the malicious node and implanting security against the threats of blackhole by notifying other nodes in the network of the incident. The simulation of the proposed algorithm demonstrates that the solution prevents the nodes in the network from blackhole attack and also improves the overall performance of AODV in the presence of black hole attack.
Highlights
A mobile ad hoc network (MANET) is a collection of mobile nodes that can instantly establish a network, whenever they coexist in the same neighborhood without the need of any fixed infrastructure or centralized administration
If malicious node masquerades false route reply (RREP) message as if it comes from another victim node instead of itself, all messages will be forwarded to the victim node
One of the most distinct feature of MANET‟s from other static networks is the fact that each node of the networks contributes in making up routes from various sources to destinations or groups of nodes acting as destination
Summary
A mobile ad hoc network (MANET) is a collection of mobile nodes that can instantly establish a network, whenever they coexist in the same neighborhood without the need of any fixed infrastructure or centralized administration. The routing protocol is expected to be able to react to these changes and must facilitate the nodes to identify new routes in the network to maintain connectivity. The problem of security in MANETs[2][3] represents a serious challenge This issue arises mainly due to the highly vibrant nature of the ad hoc network and due to the need to operate efficiently with limited number of resources, including network bandwidth, CPU processing capacity, memory and battery power (energy) of each individual node in the network. In the Black Hole attack, a malicious node absorbs all data packets in itself, similar to a hole which sucks in everything in. In this way, all packets in the network are dropped. The application of security architecture serves as the future work
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