Abstract
Mobile Ad-Hoc Networks (MANETs) are highly vulnerable to insider jamming attacks. Several approaches to detect insider jammers in MANET have been proposed. However, once the insider jammer is detected and removed from the network, it is possible for the insider jammer to leverage the knowledge of insider information to launch a future attack. In this paper, we focus on collaborative smart jamming attacks, where the attackers who have been detected as insider jammers in a MANET, return to attack the MANET based on the knowledge learned. The MANET uses a reputation-based coalition game to detect insider jammers. In the collaborative smart jamming attack, two or more smart jammers will form a coalition to attack the coalitions in the MANET. The smart jammers were detected and then excluded from their initial coalition, they then regrouped to start their own coalition and share previously gained knowledge about legitimate nodes in their erstwhile coalition with the aim of achieving a highly coordinated successful jamming attack on the legitimate coalition. The success of the attack largely depends on the insider jammer’s collective knowledge about the MANET. We present a technique to appropriately represent knowledge gathered by insider jammers which would lead to a successful attack. Simulation results in NS2 depict that coalition of jammers can leverage past knowledge to successfully attack MANET.
Highlights
In recent times, techniques to defend against threats in Mobile ad hoc networks (MANET) have received lots of attention
We have proposed a reputation-based coalition game to detect insider threats in MANET [1]; in our approach, we proposed the formation of a grand coalition which will detect insider threats based on stored transmission rate and reputation for each node in the coalition
We present an attack technique which involves a collaborative attack by a coalition of disgruntled nodes on a legitimate coalition in a MANET
Summary
Techniques to defend against threats in Mobile ad hoc networks (MANET) have received lots of attention. Blackhole attacks occur when a malicious node announces itself as having the best route to nodes whose packet it seeks to obstruct [8] Once such a node locates itself between communicating nodes, it has the ability to alter the packets passing between them. We present an attack technique which involves a collaborative attack by a coalition of disgruntled nodes on a legitimate coalition in a MANET. In the rest of the paper, disgruntled nodes referred to the set of insider nodes which were detected and moved out of the grand coalition in the MANET. The disgruntled nodes form an attack coalition with the intent to join the grand coalition and launch cooperative jamming attacks on the MANET. The success of the attack depends on the accurate knowledge of the network topology and transmission rates
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