Communication in wireless network is possible with an air medium. Due to the high security threats in this system, the network may face various difficulties. One of the major threat is jamming attack which comes under Denial Of Service (DOS) attack. Jamming attack is common among many exploits that compromises the wireless environment. The work of authorized users is by denying service to as legitimate traffic is jammed by the overwhelming frequencies of illegitimate traffic.In order to mitigate the impact of jamming, three techniques are being used: (a) how to thwart jamming in control channel (b) An Anti-jamming broadcast communication using Uncoordinated Spread Spectrum (USS) technique (c) Mitigating jamming impact in timing channel. We analyse these methods for reducing jamming inside a network.
SNS College of Technology-641 035 SNS College of Technology-641 035 SNS College of Technology-641 035 +91-9944963616 +91-9629422565 +91-9842720118 ABSTRACT Mobile Ad hoc networks (MANET) are characterized by wireless connectivity, continuous changing topology, distributed operation and ease of deployment. Wireless ad hoc networks are not protected against the attack of malicious nodes, because of security vulnerabilities in the routing protocols. There are many security issues found in MANET due to continuous changing of their topology. The most commonly identified attack is black hole attack which causes the packets being dropped during the transmission. The work proposed in this paper contributes to detect the black hole attack using Modified Associativity Based Routing protocol (MABR) which is the modification and improvement of ABR.
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