Informatics Publishing Limited

S. S. Nagamuthu Krishnan ¹, V. Saravanan ²

Affiliations
1 Thiagarajar School of Management, Madurai, Tamilnadu, Bhartathiar University, Coimbatore – 641 046
2 Department of Computer Applications, Sri Venkateswara College of Computer Applications and Management, Coimbatore-641105, IN

Abstract

The objective of the paper is to propose and describe a possible defense mechanism that can be taken up to prevent exploitation of Bit torrent in a peer-to-peer network.

Keywords

Bit Torrent, Torrent, Lechers, Seeds, Tracker

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S. S. Nagamuthu Krishnan ¹, P. Srinivasan ²

Affiliations
1 Department of MCA, RV College of Engineering, Bangalore – 560059, Karnataka, IN
2 VIT University, Vellore – 632014, Tamil Nadu, IN

Abstract

Background/Objectives: A typical Wireless Sensor Network (WSN) is a collection of Sensor nodes with limited charge that get deployed in a range enabling different applications. Enormous potential is there for deployment of WSN in consumer centric applications, industry sector and defence. Method: WSNs are vulnerable to various types of attack, upon which black-hole, a type of Denial of Service (DoS) pose enormous challenge in detection and defence. The primary characteristic of the attack is that reprogramming done by attackers in the captured nodes block the packets received than forwarding to the base station. This results in information entering the black hole area not getting routed to the destination and degradation of QoS factors of delay and final throughput. In this study a comparative performance weighing of Star and tree topology setup of WSN nodes is carried out under the black hole scenario. In case, the parameter of delay is vital Mesh setup is chosen and in the requirement of throughput efficiency and fault tolerance Star topology is chosen. A methodology for choosing the topology depending on the required service parameter under black hole scenario is also devised. Findings: The vital parameters considered for the simulation study are delay in transmission of packets and throughput efficiency among the sensor nodes. The results prove a considerable reduction of the parameter of delay in transmission of packets if hybrid topology is followed and a reasonable increase in the QoS parameter of throughput as mesh topology is adopted during transmission in a black hole vulnerable network. Improvements: The vital parameters of negligible delay and throughput efficiency that contribute effective cooperation among the sensor nodes are taken into account while choosing the appropriate topology, and the results show the distribution of the parameter values for the particular topology chosen.

Keywords

Black Hole Attacks, Delay, Denial of Service, Throughput, Topology.

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S. S. Nagamuthu Krishnan ¹, V. Saravanan ²

Affiliations
1 Thiagarajar School of Management, Madurai-625 005, IN
2 Department of Computer Applications, Dr. NGP Institute of Technology, Coimbatore, IN

Abstract

In a denial-of-service (DoS) attack, an attacker attempts to prevent legitimate users from accessing information or services. By targeting your computer and its network connection, or the computers and network of the sites you are trying to use, an attacker may be able to prevent you from accessing email, web sites, online accounts (banking, etc.), or other services that rely on the affected computer. Several value-added services have been proposed for deployment in the Internet. IP multicast is an example of such a service. IP multicast[2] is a stateful service in that it requires routers to maintain State for forwarding multicast data toward receivers. This characteristic makes the service and its users vulnerable to denial-of-service (DoS) attacks. One type of attack aims to saturate the available buffer space for storing state information at the routers. A successful attack can prevent end systems from properly joining multicast groups. In this paper, we present a solution to state overload attacks;.

Keywords

IP Multicast, State Overload Attack.

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