ICTACT Journal on Communication Technology

R. Maivizhi ¹, S. Matilda ²

Affiliations
1 Department of Computer Science and Engineering, IFET College of Engineering, IN
2 Department of Information Technology, IFET College of Engineering, IN

Abstract

The openness nature of wireless networks allows adversaries to easily launch variety of spoofing attacks and causes havoc in network performance. Recent approaches used Received Signal Strength (RSS) traces, which only detect spoofing attacks in mobile wireless networks. However, it is not always desirable to use these methods as RSS values fluctuate significantly over time due to distance, noise and interference. In this paper, we discusses a novel approach, Mobile spOofing attack DEtection and Localization in WIireless Networks (MODELWIN) system, which exploits location information about nodes to detect identity-based spoofing attacks in mobile wireless networks. Also, this approach determines the number of attackers who used the same node identity to masquerade as legitimate device. Moreover, multiple adversaries can be localized accurately. By eliminating attackers the proposed system enhances network performance. We have evaluated our technique through simulation using an 802.11 (WiFi) network and an 802.15.4 (Zigbee) networks. The results prove that MODELWIN can detect spoofing attacks with a very high detection rate and localize adversaries accurately.

Keywords

WLAN Security, Mobile Nodes, Spoofing Attack, Detection, Localization.

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S. Matilda ¹, B. Palaniappan ²

Affiliations
1 Department of Information Technology, IFET College of Engineering, Tamil Nadu, IN
2 Department of Computer Science and Engineering, Annamalai University, Tamil Nadu, IN

Abstract

Video streaming is gaining importance, with the wide popularity of multimedia rich applications in the Internet. Video streams are delay sensitive and require seamless flow for continuous visualization. Properly designed buffers offer a solution to queuing delay. The diagonally opposite QoS metrics associated with video traffic poses an optimization problem, in the design of buffers. This paper is a continuation of our previous work [1] and deals with the design of buffers. It aims at finding the optimum buffer size for enhancing QoS offered to video traffic. Network-centric QoS provisioning approach, along with hybrid transport layer protocol approach is adopted, to arrive at an optimum size which is independent of RTT. In this combinational approach, buffers of routers and end devices are designed to satisfy the various QoS parameters at the transport layer. OPNET Modeler is used to simulate environments for testing the design. Based on the results of simulation it is evident that the hybrid transport layer protocol approach is best suited for transmitting video traffic as it supports the economical design.

Keywords

Buffer Size, GoP (Group of Pictures), Hybrid Transport Layer Protocol, QoS (Quality of Service).

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