Download or read book Performance Analysis of a Secure IEEE 802 11B Wireless Network Incorporating Personal Digital Assistants written by John Lee Camp and published by . This book was released on 2002-06-01 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research results of this thesis indicate very poor performance of a Wireless Local Area Network (WLAN) utilizing PDAs. Network throughput is adversely effected most by VPN implementation and slightly by increased file size. The client distance factor has virtually no effect on the throughput. The impact of each of these factor levels is small when compared to the magnitude of the overall mean throughput (

Download or read book Performance Analysis of Secure Communications Over IEEE 802 11B Wireless Local Area Networks WLAN written by Daniel Shoubridge and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Performance analysis of ieee 802 11b networks by means of security mechanisms written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Enquanto o uso das WLAN cresce em ritmo acelerado, inúmerosproblemas relacionados à tecnologia de segurança, definida no IEEE 802.11b, têmsido abordados em publicações técnicas, apontando deficiências evulnerabilidades, através dos quais indivíduos não autorizados podem ter acessoàs informações disponibilizadas pela rede. A precariedade na autenticação, confidencialidade e integridade dos dados dos mecanismos internos do PadrãoIEEE 802.11b exige a operação conjunta com o Padrão IEEE 802.1x. Estacombinação possibilita a autenticação e criptografia dos dados de forma maiseficiente e confiável. No entanto, é possível que haja sobrecarga de pacotes, devido à inserção de tráfego extra para autenticação dos usuários e criptografiadas mensagens, podendo ocasionar comprometimento na performance da rede. Desta forma, avaliou-se qual a efetiva degradação no desempenho das redes IEEE802.11b, devido à implementação dos mecanismos de segurança, sejam elesintrínsecos ao Padrão ou combinados com o Padrão IEEE 802.1x, utilizando osprotocolos FTP (File Transfer Protocol) e HTTP (Hipertext Transfer Protocol).

Download or read book Performance Analysis of IEEE 802 11A Signals Under Different Operational Environments written by Roy Chan Hsiung Wei and published by . This book was released on 2004-09 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the rapid employment of wireless networks commercially, the military is seeking viable solutions for providing high-speed wireless network throughout the battle space. The IEEE 802.11a wireless LAN presents an attractive solution providing up to 54 Mbps data-link bandwidth. Moreover, it operates in the less congested 5-GHz U-NII band and possesses more operating channels. This research implemented two prototype systems using low-cost commercially available hardware. The Cisco Aironet 1400 wireless bridge and the Proxim Tsunami MP.11a wireless system were chosen for their superior specifications and for their reputation of being market leaders in IEEE 802.11 wireless products. The performances of the prototype systems were evaluated in three operational environments (land, water and vegetation). The data collected were then compared to the theoretical performance.

Download or read book Performance Analysis of the IEEE 802 11 Wireless LAN Standard written by Craig Sweet and published by . This book was released on 1999 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Performance Investigation of the IEEE 802 11b Wireless Network written by Amer Mushtaq Sundal and published by . This book was released on 2004 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Performance Analysis of IEEE 802 11A Signals Under Different Operational Environments written by and published by . This book was released on 2004 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the rapid employment of wireless networks commercially, the military is seeking viable solutions for providing high-speed wireless network throughout the battle space. The IEEE 802.11a wireless LAN presents an attractive solution providing up to 54 Mbps data-link bandwidth. Moreover, it operates in the less congested 5-GHz U-NII band and possesses more operating channels. This research implemented two prototype systems using low-cost commercially available hardware. The Cisco Aironet 1400 wireless bridge and the Proxim Tsunami MP.11a wireless system were chosen for their superior specifications and for their reputation of being market leaders in IEEE 802.11 wireless products. The performances of the prototype systems were evaluated in three operational environments (land, water and vegetation). The data collected were then compared to the theoretical performance.

Download or read book Performance Analysis of the IEEE 802 11 based Wireless Networks in the Presence of Hidden Stations written by Fu-Yi Hung and published by . This book was released on 2009 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: The IEEE 802.11 is the most widely used standard in WLAN currently. It can support not only a WLAN with an access point but also an ad hoc wireless network. The key for being able to support various wireless networks is the Distribution Coordination Function (DCF) which is one of channel access methods in the IEEE 802.11 Medium Access Control (MAC) protocol. The DCF is a random access method where each station has the right to initiate a transmission without any central coordination. Hence, this method is useable not only in infrastructure network configurations but also in distributed and self-organized wireless networks. However, this random access method unavoidably introduces the hidden station problem that multiple stations simultaneously transmit packets to a common destination resulting in packet collision at the destination. This problem results from that DCF does not support the destination coordinating the traffic inside its transmission range. The hidden station problem is unique to wireless networks and significantly degrades the performance of wireless networks, but this problem has been ignored in previous studies. We propose our research work that model and analyze the performance of wireless networks including the hidden station effect in access-point and ad hoc type wireless networks. In access-point based wireless networks, we present a modified two-dimensional Markov chain model that characterizes the network performance in the presence of hidden stations. This model generalizes the existing work on IEEE 802.11 DCF performance modeling, and it is validated by comparison with ns-2 simulation. Second, in wireless ad hoc networks, the hidden station effect is different from that in an access-point based wireless network. Furthermore, this effect largely depends on the sender-receiver distance and physical carrier-sensing range. We devise a spatiotemporal analytical model that estimates the number of hidden stations based on the sender-receiver distance and physical carrier-sensing range. In addition, we also use our two-dimensional Markov chain model to evaluate the network performance under the hidden station effect in wireless ad hoc network. This result is in agreement with the result obtained by ns-2 simulation.

Download or read book Guide to Bluetooth Security written by Karen Scarfone and published by DIANE Publishing. This book was released on 2009-05 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document provides info. to organizations on the security capabilities of Bluetooth and provide recommendations to organizations employing Bluetooth technologies on securing them effectively. It discusses Bluetooth technologies and security capabilities in technical detail. This document assumes that the readers have at least some operating system, wireless networking, and security knowledge. Because of the constantly changing nature of the wireless security industry and the threats and vulnerabilities to the technologies, readers are strongly encouraged to take advantage of other resources (including those listed in this document) for more current and detailed information. Illustrations.

Download or read book 802 11 Security written by Bruce Potter and published by "O'Reilly Media, Inc.". This book was released on 2002-12-17 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focusing on wireless LANs in general and 802.11-based networks in particular, Potter (VeriSign) and Fleck (Secure Software) outline strategies and implementations for deploying a secure wireless network. They explain how the 802.11 protocols work and how an attacker will attempt to exploit weak spots within a network, and suggest methods for locking down a wireless client machine and securely configuring a wireless access point. Annotation : 2004 Book News, Inc., Portland, OR (booknews.com).

Download or read book Mobility Protocols and Handover Optimization written by Ashutosh Dutta and published by John Wiley & Sons. This book was released on 2014-03-07 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a common framework for mobility management that considers the theoretical and practical aspects of systems optimization for mobile networks. In this book, the authors show how an optimized system of mobility management can improve the quality of service in existing forms of mobile communication. Furthermore, they provide a theoretical approach to mobility management, as well as developing the model for systems optimization, including practical case studies using network layer and mobility layer protocols in different deployment scenarios. The authors also address the different ways in which the specific mobility protocol can be developed, taking into account numerous factors including security, configuration, authentication, quality of service, and movement patterns of the mobiles. Key Features: Defines and discusses a common set of optimization methodologies and their application to all mobility protocols for both IPv4 and IPv6 networks Applies these technologies in the context of various layers: MAC layer, network layer, transport layer and application layer covering 802.11, LTE, WiMax, CDMA networks and protocols such as SIP, MIP, HIP, VoIP, and many more Provides a thorough analysis of the required steps during a mobility event such as discovery, network selection, configuration, authentication, security association, encryption, binding update, and media direction Includes models and tables illustrating the analysis of mobility management as well as architecture of sample wireless and mobility test beds built by the authors, involving inter-domain and intra-domain mobility scenarios This book is an excellent resource forprofessionals and systems architects in charge of designing wireless networks for commercial (3G/4G), LTE, IMS, military and Ad Hoc environment. It will be useful deployment guide for the architects wireless service providers. Graduate students, researchers in industry and academia, and systems engineers will also find this book of interest.

Download or read book Designing and Deploying 802 11 Wireless Networks written by Jim Geier and published by Cisco Press. This book was released on 2015-04-29 with total page 778 pages. Available in PDF, EPUB and Kindle. Book excerpt: Designing and Deploying 802.11 Wireless Networks Second Edition A Practical Guide to Implementing 802.11n and 802.11ac Wireless Networks For Enterprise-Based Applications Plan, deploy, and operate high-performance 802.11ac and 802.11n wireless networks The new 802.11ac standard enables WLANs to deliver significantly higher performance. Network equipment manufacturers have refocused on 802.11ac- and 802.11n-compliant solutions, rapidly moving older versions of 802.11 toward “legacy” status. Now, there’s a complete guide to planning, designing, installing, testing, and supporting 802.11ac and 802.11n wireless networks in any environment, for virtually any application. Jim Geier offers practical methods, tips, and recommendations that draw on his decades of experience deploying wireless solutions and shaping wireless standards. He carefully introduces 802.11ac’s fundamentally different design, site survey, implementation, and network configuration techniques, helping you maximize performance and avoid pitfalls. Geier organizes each phase of WLAN deployment into clearly defined steps, making the entire planning and deployment process easy to understand and execute. He illuminates key concepts and methods through realistic case studies based on current Cisco products, while offering tips and techniques you can use with any vendor’s equipment. To build your skills with key tasks, you’ll find several hands-on exercises relying on free or inexpensive tools. Whether you’re deploying an entirely new wireless network or migrating from older equipment, this guide contains all the expert knowledge you’ll need to succeed. Jim Geier has 30 years of experience planning, designing, analyzing and implementing communications, wireless, and mobile systems. Geier is founder and Principal Consultant of Wireless-Nets, Ltd., providing wireless analysis and design services to product manufacturers. He is also president, CEO, and co-founder of Health Grade Networks, providing wireless network solutions to hospitals, airports, and manufacturing facilities. His books include the first edition of Designing and Deploying 802.11n Wireless Networks (Cisco Press); as well as Implementing 802.1X Security Solutions and Wireless Networking Handbook. Geier has been active in the IEEE 802.11 Working Group and Wi-Fi Alliance; has chaired the IEEE Computer Society (Dayton Section) and various conferences; and served as expert witness in patent litigation related to wireless and cellular technologies. Review key 802.11 concepts, applications, markets, and technologies Compare ad hoc, mesh, and infrastructure WLANs and their components Consider the impact of radio signal interference, security vulnerabilities, multipath propagation, roaming, and battery limitations Thoroughly understand today’s 802.11 standards in the context of actual network deployment and support Plan your deployment: scoping, staffing, schedules, budgets, risks, feasibility analysis, and requirements Architect access networks and distribut

Download or read book Broadband Wireless Access and Local Networks written by Byeong Gi Lee and published by Artech House. This book was released on 2008 with total page 647 pages. Available in PDF, EPUB and Kindle. Book excerpt: This authoritative resource offers you complete, state-of-the-art coverage of wireless broadband access networks. The book provides you with a thorough introduction to wireless access and local networks, covers broadband mobile wireless access systems, and details mobile and broadband wireless local area networks. This forward-looking reference focuses on cutting-edge mobile WiMax, WiFi, and WiBro technologies, including in-depth design and implementation guidance. Collecting the most recent experience and knowledge of design and field engineers from leading organizations like Samsung Electronics, Korea Telecom (KT) Corporation and Philips Electronics, the book introduces the network technologies adopted by Mobile WiMAX for the implementation of IP-based broadband mobile wireless access. Moreover, it covers the Wi-Fi technologies that have steadily evolved over the past decade, establishing a firm foundation for IP-based wireless local network access.

Download or read book Security Self assessment Guide for Information Technology System written by Marianne Swanson and published by . This book was released on 2001 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 802 11ac A Survival Guide written by Matthew S. Gast and published by "O'Reilly Media, Inc.". This book was released on 2013-07-23 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: The next frontier for wireless LANs is 802.11ac, a standard that increases throughput beyond one gigabit per second. This concise guide provides in-depth information to help you plan for 802.11ac, with technical details on design, network operations, deployment, and monitoring. Author Matthew Gast—an industry expert who led the development of 802.11-2012 and security task groups at the Wi-Fi Alliance—explains how 802.11ac will not only increase the speed of your network, but its capacity as well. Whether you need to serve more clients with your current level of throughput, or serve your existing client load with higher throughput, 802.11ac is the solution. This book gets you started. Understand how the 802.11ac protocol works to improve the speed and capacity of a wireless LAN Explore how beamforming increases speed capacity by improving link margin, and lays the foundation for multi-user MIMO Learn how multi-user MIMO increases capacity by enabling an AP to send data to multiple clients simultaneously Plan when and how to upgrade your network to 802.11ac by evaluating client devices, applications, and network connections

Download or read book Data Communication Principles written by Aftab Ahmad and published by Springer Science & Business Media. This book was released on 2007-05-08 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Data Communication Principles for Fixed and Wireless Networks focuses on the physical and data link layers. Included are examples that apply to a diversified range of higher level protocols such as TCP/IP, OSI and packet based wireless networks. Performance modeling is introduced for beginners requiring basic mathematics. Separate discussion has been included on wireless cellular networks performance and on the simulation of networks. Throughout the book, wireless LANS has been given the same level of treatment as fixed network protocols. It is assumed that readers would be familiar with basic mathematics and have some knowledge of binary number systems. Data Communication Principles for Fixed and Wireless Networks is for students at the senior undergraduate and first year graduate levels. It can also be used as a reference work for professionals working in the areas of data networks, computer networks and internet protocols.

Download or read book 802 11 Wireless Networks The Definitive Guide written by Matthew S. Gast and published by "O'Reilly Media, Inc.". This book was released on 2005-04-25 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt: As we all know by now, wireless networks offer many advantages over fixed (or wired) networks. Foremost on that list is mobility, since going wireless frees you from the tether of an Ethernet cable at a desk. But that's just the tip of the cable-free iceberg. Wireless networks are also more flexible, faster and easier for you to use, and more affordable to deploy and maintain.The de facto standard for wireless networking is the 802.11 protocol, which includes Wi-Fi (the wireless standard known as 802.11b) and its faster cousin, 802.11g. With easy-to-install 802.11 network hardware available everywhere you turn, the choice seems simple, and many people dive into wireless computing with less thought and planning than they'd give to a wired network. But it's wise to be familiar with both the capabilities and risks associated with the 802.11 protocols. And 802.11 Wireless Networks: The Definitive Guide, 2nd Edition is the perfect place to start.This updated edition covers everything you'll ever need to know about wireless technology. Designed with the system administrator or serious home user in mind, it's a no-nonsense guide for setting up 802.11 on Windows and Linux. Among the wide range of topics covered are discussions on: deployment considerations network monitoring and performance tuning wireless security issues how to use and select access points network monitoring essentials wireless card configuration security issues unique to wireless networks With wireless technology, the advantages to its users are indeed plentiful. Companies no longer have to deal with the hassle and expense of wiring buildings, and households with several computers can avoid fights over who's online. And now, with 802.11 Wireless Networks: The Definitive Guide, 2nd Edition, you can integrate wireless technology into your current infrastructure with the utmost confidence.