Evaluation of WLAN Security and Performance

Evaluation of WLAN Security and Performance
Author: Alikira Richard
Publisher: GRIN Verlag
Total Pages: 42
Release: 2012-12-06
Genre: Computers
ISBN: 3656331030
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Research Paper (postgraduate) from the year 2012 in the subject Computer Science - Internet, New Technologies, Kampala International University (School of postgraduate studies/computer department), course: Network security, language: English, abstract: This report addresses the reality of Wireless LAN security and performance. It provides an overview of security mechanisms and explains how security works in Wireless LAN networks. An in depth analysis of the Wired Equivalent Privacy (WEP), Wi-Fi protected access (WPA) and WPA2 standards is presented. The security vulnerabilities that exist in them are analyzed and explained. An experiment involving four devices (Dlink, Linksys, nanostationloco2 and a WBS) was done at Kampala international university. It was discovered from literature that most people prefer using WEP yet it is least secure. One study says 30% of all WLANs detected during network discovery experiment operate with WEP encryption. The study further proved that WEP can be compromised with 100% success. It was also discovered during the experiment that factors such as line of sight, obstruction, distance, antenna type, channel being used all affect network performance. The findings of this experiment can be used as guideline choosing the right encryption method and in designing a WLAN.

802.11 Wireless Networks

802.11 Wireless Networks
Author: Alan Holt
Publisher: Springer Science & Business Media
Total Pages: 227
Release: 2010-06-25
Genre: Computers
ISBN: 1849962758
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This unique and practical text introduces the principles of WLANs based upon the IEEE 802.11 standards, demonstrating how to configure equipment in order to implement various network solutions. The text is supported by examples and detailed instructions.

Wireless Network Security

Wireless Network Security
Author: Yang Xiao
Publisher: Springer Science & Business Media
Total Pages: 423
Release: 2007-12-29
Genre: Computers
ISBN: 0387331123
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This book identifies vulnerabilities in the physical layer, the MAC layer, the IP layer, the transport layer, and the application layer, of wireless networks, and discusses ways to strengthen security mechanisms and services. Topics covered include intrusion detection, secure PHY/MAC/routing protocols, attacks and prevention, immunization, key management, secure group communications and multicast, secure location services, monitoring and surveillance, anonymity, privacy, trust establishment/management, redundancy and security, and dependable wireless networking.

Performance Evaluation of Security Algorithms in a Wi-Fi Testbed

Performance Evaluation of Security Algorithms in a Wi-Fi Testbed
Author: Kshitiz Saxena
Publisher: LAP Lambert Academic Publishing
Total Pages: 108
Release: 2012-05
Genre:
ISBN: 9783659132537
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In the IEEE 802.11 standard an optional encryption protocol called Wired Equivalency Privacy (WEP) is used to make wireless traffic as secure as wired network traffic. However it has been found that WEP suffers several weaknesses like a shared key weakness, no per-packet authentication, vulnerability to disassociation attacks, no user identification and authentication, no central authentication, authorization, and accounting support and vulnerability of RC4 to known plaintext attacks. To address these concerns, The Temporal Key Integrity Protocol (TKIP) was created to fix the weaknesses of Wired Equivalent Privacy (WEP). Wireless security is an exciting field of study, and we aim to find more weaknesses and new application areas of the attacks on TKIP. We hope that our work may contribute to motivate people to migrate their wireless security protocols to the more secure alternative CCMP.

Improving the Performance of Wireless LANs

Improving the Performance of Wireless LANs
Author: Nurul Sarkar
Publisher: CRC Press
Total Pages: 474
Release: 2014-01-08
Genre: Computers
ISBN: 1466560630
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While there are countless books on wireless networks, few actually quantify the key performance-limiting factors of wireless local area networks (WLANs) and describe various methods for improving WLAN performance. Fulfilling these needs, Improving the Performance of Wireless LANs: A Practical Guide provides both theoretical background and empirical results for the optimum planning and deployment of high performance WLAN systems in different residential and commercial buildings. Useful to students, faculties, researchers, engineers, and network developers, this must-have book not only explains the fundamentals of WLAN systems, including WLAN features and standards, but also: Supplies strategic guidelines for WLAN system design, modeling, and performance evaluation Includes radio propagation and site measurements as well as simulations for various network design scenarios Discusses environmental effects on WLAN performance, protocol redesign for routing and MAC, and traffic distribution Contains numerous illustrations and examples, plus chapter summaries, review questions, reading lists, mini-projects, an extensive glossary, and a list of acronyms Examines emerging and future network technologies, such as next generation Wi-Fi (802.11ac), very high throughput Wi-Fi (802.11ad), wireless mesh networking (802.11s), emergency QoS (802.11u), and vehicle-to-vehicle communications (802.11p) Improving the Performance of Wireless LANs: A Practical Guide makes the teaching, learning, and researching of advanced wireless network design and performance a more active process by using practical tools and exercises to add life to this highly technical subject.

Handbook of Wireless Local Area Networks

Handbook of Wireless Local Area Networks
Author: Mohammad Ilyas
Publisher: CRC Press
Total Pages: 664
Release: 2005-05-25
Genre: Computers
ISBN: 020349251X
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Handbook of Wireless Local Area Networks: Applications, Technology, Security, and Standards captures the current state of wireless LANs, and serves as the single comprehensive reference on the subject. Addressing challenges related to the further development of WLAN technology, the Handbook covers the entire spectrum of topics from basic concepts t

An IT and Security Comparison Decision Support System for Wireless LANs

An IT and Security Comparison Decision Support System for Wireless LANs
Author: Kevin T. Reynolds
Publisher: Universal-Publishers
Total Pages: 288
Release: 2004
Genre: Computers
ISBN: 9781581125412
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Are all Wireless LANs equal? A network administrator is faced with a plethora of wireless services, complex radio issues, and products for wireless data. There are brand new protocols and products that could become obsolete a day after installation! Over 40% of all deployed WLANs do not even have minimum security activated, exposing the company's network and records to easy outsider access.The WLAN industry is characterized by rapidly changing, incomplete or proprietary standards, which can impact interoperability goals. There are complicated ownership costs, performance limitations, and security configurations that exist for WLANs which many network administrators may not understand or know how to compare. This dissertation presents a decision support system (DSS) that enables a novice network administrator to compare WLAN protocol capabilities, rank security configurations, rate IT cost efforts and use an extensive feature list. An in-depth discussion, concerning WLAN protocols, virtual private networks (VPNs), various encryption algorithms, 802.1X authentication mechanisms, and compilation of network selection criteria provides the foundation to construct a small DSS to aid WLAN network administrators. The DSS uses a set of rules to evaluate a series of potential requirements and provides pertinent WLAN decision-making information. The DSS environment allows a number of specific what-if scenarios to be reviewed and compared; multiple solutions can be tried without having to deal with the consequences. Alternative technologies are listed by the DSS to educate the decision maker about other options.

Evaluation of Secure 802. 1X Port-Based Network Access Authentication Over 802. 11 Wireless Local Area Networks

Evaluation of Secure 802. 1X Port-Based Network Access Authentication Over 802. 11 Wireless Local Area Networks
Author: Huseyin S. Ozturk
Publisher:
Total Pages: 191
Release: 2003-03-01
Genre:
ISBN: 9781423503460
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Since wireless technology has been used in Local Area Networks (LAN), our networks are easier to build and are more scalable and mobile than legacy structures. While providing these functionalities, Wireless LAN (WLAN)'s have some security vulnerabilities that should be addressed. Failing to examine the security risks of WLAN technology and to take the necessary countermeasures may result in unauthorized entry into the legacy local area networks and other attacks. A secure connection to an intranet, which holds critical data and applications, must be the utmost consideration in the effort to protect critical resources. This thesis builds an open-source test-bed for evaluating WLAN security protocols. Moreover, it investigates the suitability of the IEEE 802.1X standard to provide the required security framework to WLANs. This research determines that the IEEE 802.1X could enhance the security level in authentication and privacy by enabling the rekeying process but would not prevent Denial of Service attacks via unauthenticated management frames.

Wireless Personal Area Networks

Wireless Personal Area Networks
Author: Jelena Misic
Publisher: John Wiley & Sons
Total Pages: 336
Release: 2008-02-28
Genre: Technology & Engineering
ISBN: 9780470986417
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Wireless Personal Area Networks provides an in-depth analysis of the recent IEEE 802.15.4 standard for low data rate wireless personal area networks (LR-WPANs), including suggestions to improve performance and comparisons with the related 802.15.1 (Bluetooth) standard. It assesses the suitability of the standard for the development and deployment of wireless sensor networks as well as providing guidance and insight into the relative advantages and disadvantages of various performance solutions. Wireless Personal Area Networks: Provides a comprehensive, in-depth look at the issues surrounding WPAN network operation and performance. Investigates multi-cluster networks and compares how they can be implemented. Analyzes the performance of a single cluster under different traffic and power management regimes including uplink vs. downlink traffic, acknowledged vs. unacknowledged traffic, saturation vs. non-saturation, and the like. Discusses security issues in WPANs such as different security threats, their impact on performance, standard security mechanisms, and security policies. Compares the IEEE 802.15.4 standard with the related Bluetooth IEEE 802.15.1 standard in terms of suitability for implementing wireless sensor networks. This reference is a valuable tool for developers and researchers getting acquainted with various aspects of IEEE 802.15.4 technology. Graduate students studying courses such as Performance Evaluation, Wireless Sensor Networks and Queuing Theory will also find this book very insightful.