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Mathematical Problems in Engineering
Volume 2014 (2014), Article ID 620926, 8 pages
Research Article

A New Mechanism for Network Monitoring and Shielding in Wireless LAN

1Department of Computer Science and Technology, Tongji University, Shanghai 201804, China
2Key Laboratory of Embedded System and Service Computing of Ministry of Education, Tongji University, Shanghai 201804, China

Received 5 December 2013; Accepted 21 January 2014; Published 10 March 2014

Academic Editor: Huaicheng Yan

Copyright © 2014 Jiujun Cheng et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Wireless LAN (WLAN) technology is developing rapidly with the help of wireless communication technology and social demand. During the development of WLAN, the security is more and more important, and wireless monitoring and shielding are of prime importance for network security. In this paper, we have explored various security issues of IEEE 802.11 based wireless network and analyzed numerous problems in implementing the wireless monitoring and shielding system. We identify the challenges which monitoring and shielding system needs to be aware of, and then provide a feasible mechanism to avoid those challenges. We implemented an actual wireless LAN monitoring and shielding system on Maemo operating system to monitor wireless network data stream efficiently and solve the security problems of mobile users. More importantly, the system analyzes wireless network protocols efficiently and flexibly, reveals rich information of the IEEE 802.11 protocol such as traffic distribution and different IP connections, and graphically displays later. Moreover, the system running results show that the system has the capability to work stably, and accurately and analyze the wireless protocols efficiently.