Hiding Approach for Thwarting Attacks in Wireless Networks

Abstract

The open and shared nature of the wireless medium makes it easy for an adversary to launch a wireless jamming attack. Attacks can be of various types like Denial of Service, Distributed Denial of Service.  The objective of denial-of-service attack is to make the server resource unavailable to the legitimate users. If zombies of attacker attack simultaneously it is called distributed denial-of-service attack. The idea here is to prevent the Ad-hoc network from DOS attack. An Ad-hoc network is an infrastructure-less, de-centralized network, consisting of a group of mobile wireless nodes, moving around freely and cooperating with each other in forwarding of packets. Normally jammers are considered outside the network, but this paper describes jammer to be inside the network which selects the packets of higher importance and attack them. Compromising a single node is enough to reveal all the network secrets and that compromised node acts as jammer. To prevent the network from jamming attack, the packets are hided and then transmitted. This paper describes a method for preventing Denial of service attack in the presence of jammers. A technique called Data Commitment-Concealing scheme has been proposed to prevent the classification of transmitted packets and hide the packet effectively.