This book constitutes the thoroughly refereed post-workshop proceedings of the Second International Conference on MOBILe Wireless MiddleWARE, Mobilware 2009, held in Berlin, Germany, in April 2009...

Cet aide-mémoire s'adresse principalement aux étudiants d'IUT, de 1er et 2° cycles, ainsi qu'aux élèves ingénieurs. Il intéressera également les ingénieurs et techniciens en exercice. L'ouvrage, qui offre une approche pragmatique, est composé de deux grandes parties : le traitement des signaux analogiques et le traitement des signaux numériques.

* Expected to serve up to 40 million mobile workers by 2004, Mobile VPNs provide professionals and consumers with secure data access to private networks while on the road
* An in-depth tutorial on the technology that wireless carriers will require to offer competitive IP-based services
* Teaches how to implement Mobile VPNs within GPRS, CDMA2000, UMTS and WLAN environments
* Examines technologies like IP tunneling, security, roaming, addressing, AAA brokerage, and the latest standards as applied in wireless data systems frameworks

Представлен подробный анализ причин возникновения уязвимостей и типичных ошибок, допускаемых при развертывании беспроводных сетей. Описываются этапы построения защищенной беспроводной сети - от создания политики безопасности до настройки систем обнаружения беспроводных атак и проведения тестов на проникновения. Рассматриваются современные средства и технологии защиты, такие как 802.1Х, PEAP, SSL, IPSec, WPA и 802.11. Отдельный раздел посвящен защите мобильных устройств на основе ОС Windows Mobile. Рассматривается реализованная в Windows Mobile модель безопасности, а также приводятся рекомендации по использованию встроенных защитных механизмов для безопасного доступа к корпоративным
ресурсам. Для системных администраторов, инженеров, специалистов в области информационной безопасности.

Wireless networks technologies have been dramatically improved by the popularity of third generation (3G) wireless networks, wireless LANs, Bluetooth, and sensor networks. However, security is a major concern for wide deployments of such wireless networks. The contributions to this volume identify various vulnerabilities in the physical layer, the MAC layer, the IP layer, the transport layer, and the application layer, and discuss ways to strengthen security mechanisms and services in all these layers.

Offering the prospect of instantaneous, cable-free Internet connectivity and an array of Web services to cell phones, handheld computers, and other mobile devices, wireless technology is already changing the way business is done, on and off the Web. If you're a non-technical executive or manager who needs to get up to speed as quickly as possible on this "next big thing" in the world of eCommerce, you need Bryan Bergeron's The Wireless Web. Writing from a business perspective, Bergeron fills you in on the key concepts and important technologies involved. You get a detailed look at the domestic wireless market as well as the European and Asian markets. Most importantly, he provides you with a complete blueprint for capitalizing on the new wave of eCommerce.

A cell phone’s roaming feature allows the user to get service when traveling beyond the boundaries of his/her service provider. Wireless service providers make approximately 30% of their operating profit from roaming. But despite being a major source of income, roaming suffers from a number of technological problems in the handoff between networks. Signal strength is wildly variable, calls are frequently dropped, and quality of service is poor. Based upon training courses the author teaches at Agilent and Hewlett-Packard, this is the first book to give communications engineers the know-how to faultlessly design and manage roaming services.

This acclaimed wireless intro book provides a thorough understanding the basic workings of wireless networks, technology, and regulations, clearly explaining concepts like radio frequency, cell sites and switching, as well as the regulatory processes that affect all wireless service providers and equipment manufacturers. This new edition has been heavily revised to cover digital wireless: GPRS, 3G, UTMS, cdma2000, Wi-Fi, WiMAX, and the host of new digital services driving wireless growth.

Most UNIX systems today are POSIX compliant because the federal government requires it for its purchases. Even OSF and UI agree on support for POSIX. Bluetooth is a technology for wireless communication that functions in much the same way that home/office laptops connect to the Internet. It is typically used for short burst communications instead of a continuous connection. Because of this difference, Bluetooth is more typically found supported in wireless phones and personal devices.