Abstract
Article history: Received May 20, 2012 Received in Revised form July, 29, 2012 Accepted 15 August 2012 Available online 20 August 2012 In mobile ad hoc network (MANET), secure communication is more challenging task due to its fundamental characteristics like having less infrastructure, wireless link, distributed cooperation, dynamic topology, lack of association, resource constrained and physical vulnerability of node. In MANET, attacks can be broadly classified in two categories: routing attacks and data forwarding attacks. Any action not following rules of routing protocols belongs to routing attacks. The main objective of routing attacks is to disrupt normal functioning of network by advertising false routing updates. On the other hand, data forwarding attacks include actions such as modification or dropping data packet, which does not disrupt routing protocol. In this paper, we address the “Packet Drop Attack”, which is a serious threat to operational mobile ad hoc networks. The consequence of not forwarding other packets or dropping other packets prevents any kind of communication to be established in the network. Therefore, there is a need to address the packet dropping event takes higher priority for the mobile ad hoc networks to emerge and to operate, successfully. In this paper, we propose a method to secure ad hoc on-demand distance vector (AODV) routing protocol. The proposed method provides security for routing packets where the malicious node acts as a black-hole and drops packets. In this method, the collaboration of a group of nodes is used to make accurate decisions. Validating received RREPs allows the source to select trusted path to its destination. The simulation results show that the proposed mechanism is able to detect any number of attackers. © 2012 Growing Science Ltd. All rights reserved.
Highlights
A Mobile ad hoc network (MANET) is an autonomous system of wireless mobile nodes, which can be dynamically setup anywhere and anytime
We address the “Packet Drop Attack”, which is a serious threat to operational mobile ad hoc networks
The main problem in mobile ad hoc networks is the lack of consistency to deliver information to the intended node so, MANET is more vulnerable to security attacks than conventional wired and wireless networks due to its fundamental characteristics of open medium, dynamic topology, absence of centralized access point, distributed cooperation, lack of association (Yang et al, 2004)
Summary
A Mobile ad hoc network (MANET) is an autonomous system of wireless mobile nodes, which can be dynamically setup anywhere and anytime. The main problem in mobile ad hoc networks is the lack of consistency to deliver information to the intended node so, MANET is more vulnerable to security attacks than conventional wired and wireless networks due to its fundamental characteristics of open medium, dynamic topology, absence of centralized access point, distributed cooperation, lack of association (Yang et al, 2004). Routing algorithm needs mutual trust between nodes and absence of centralized access point prevents use of monitoring agent in the system. Routing messages are processed by intermediate nodes during their propagation securing routing messages is more challenging compared with data messages. The proposed method is focused on AODV protocol, the proposed solution is applicable to other routing protocols for MANETs
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