802.11 Wireless LAN Fundamentals gives networking engineers and IT professionals the knowledge they need to design, deploy, manage, and troubleshoot their own wireless local-area networks (WLANs). Starting with an overview of the technology and architecture of WLANs, the book goes on to explain services and advanced features that such applications can provide. Most importantly, it provides practical design guidance and deployment recommendations.

This text describes in detail WBEM/CIM architecture and explores the standard models developed by the Distributed Management Task Force (DMTF). It also explores interfaces your WBEM/CIM code will have to work with and offers examples of models and code.

This book can be presented in two different ways. Firstly, it introduces a particular methodology to build adaptive Web sites and secondly, it presents the main concepts behind Web mining and then applying them to adaptive Web sites. In this case, Adaptive Web Sites is the case study to exemplify the tools introduced in the text. The authors start by introducing the Web and motivating the need for adaptive Web sites. The second chapter introduces the main concepts behind a Web site: its operation, its associated data and structure, user sessions, etc. Chapter three explains the Web mining process and the tools to analyze Web data, mainly focused in machine learning. The fourth chapter looks at how to store and manage data. Chapter five looks at the three main and different mining tasks: content, links and usage. The following chapter covers Web personalization; a crucial topic if we want to adapt our site to specific groups of people. Chapter seven shows how to use information extraction techniques to find user behavior patterns. The subsequent chapter explains how to acquire and maintain knowledge extracted from the previous phase. Finally, chapter nine contains the case study where all the previous concepts are applied to present a framework to build adaptive Web sites. In other words, the authors have taken care of writing a self-contained book for people that want to learn and apply personalization and adaptation in Web sites. This is commendable considering the large and increasing bibliography in these and related topics. The writing is easy to follow and although the coverage is not exhaustive, the main concepts and topics are all covered.

  Текст у форматі PDF 5.03 Мб

The second edition of Cisco Voice Over IP (CVOICE) provides readers with all the critical information needed to implement and support data and voice integration solutions at the network-access level. In addition, this book prepares the reader for the CVOICE certification exam 642-432, which applies to multiple Cisco IP Telephony Specialist certifications and the Cisco Certified Voice Professional (CCVP) certification. The book is based on the 5.0 curriculum, and has extra coverage on particularly tough areas of that course, such as H.323 gateway/gatekeeper and QoS configuration. This book will serve readers as a valuable study aid and an invaluable theory, configuration, and troubleshooting reference. Coverage starts with a review for readers new to voice technologies and continues with in-depth information on implementation, concepts and protocols, call control models available, roadblock and troubleshooting strategies, and QoS issues. The book also expands beyond the curriculum to cover topics such as WRR, AutoQoS on a Catalyst switch, LFI, using MQC to configure classification, marking, LLQ, WRED, policing, and shaping. How does the book differ from the previous edition? It includes updated coverage of voice technologies, IOS version 12.3 updates including AutoQoS, H.323 enhancements, MGCP enhancements, and SIP enhancements, and practical editorial elements like hands-on lab exercises and configuration examples are given greater emphasis.

The Exam Cram Method of study focuses on exactly what you need to get certified now

Hey! Socket programming got you down? Is this stuff just a little too difficult to figure out from the man pages? You want to do cool Internet programming, but you don't have time to wade through a gob of structs trying to figure out if you have to call bind() before you connect(), etc., etc. Well, guess what! I've already done this nasty business, and I'm dying to share the information with everyone! You've come to the right place. This document should give the average competent C programmer the edge s/he needs to get a grip on this networking noise.

Your business must be connected in order to compete in the global marketplace. Employees need to know that their company's network is accessible at any time, from any place. A Virtual Private Network (VPN) accomplishes this by utilizing remote connectivity technologies that combine existing internal networks with the Internet to securely communicate information. Building a Virtual Private Network is your key to designing, implementing, and securing a fully connected network that meets your business needs.

More than a million systems are now connected to the Internet, and something like 15 million people in 100 countries on all seven continents use Internet services. More than 100 million email messages are exchanged each day, along with countless files, documents, and audio and video images. Everyone is jumping on the Internet bandwagon. Once a haven for academicians and scientists, the Net is now reaching large and small businesses, government at all levels, school children, and senior citizens. The commercial world is rushing headlong into doing business on the Internet, barely pausing while technologies and policies catch up with their desire to go online. But, too few of the seekers after Internet wisdom and riches consider whether their businesses will be safe on the Net. What kinds of security risks are posed by the Internet? Some risks have been around since the early days of networking -- password attacks (guessing them or cracking them via password dictionaries and cracking programs), denial of service, and exploiting known security holes. Some risks are newer and even more dangerous -- packet sniffers, IP (Internet Protocol) forgery, and various types of hijacking attacks. Firewalls are a very effective way to protect your system from these Internet security threats. Firewalls in computer networks keep damage on one part of the network (e.g., eavesdropping, a worm program, file damage) from spreading to the rest of the network. Without firewalls, network security problems can rage out of control, dragging more and more systems down. What is a firewall? It's a hardware and/or software solution that restricts access from your internal network to the Internet -- and vice versa. A firewall may also be used to separate two or more parts of your local network (for example, protecting finance from R&D). The firewall is installed at the perimeter of the network, ordinarily where it connects to the Internet. You can think of a firewall as a checkpoint; all traffic, incoming and outgoing, is stopped at this point. Because it is, the firewall can make sure that it is acceptable. "Acceptable" means that whatever is passing through -- email, file transfers, remote logins, NFS mounts, etc. -- conforms to the security policy of the site. Building Internet Firewalls is a practical guide to building firewalls on the Internet. If your site is connected to the Internet, or if you're considering getting connected, you need this book. It describes a variety of firewall approaches and architectures and discusses how you can build packet filtering and proxying solutions at your site. It also contains a full discussion of how to configure Internet services (e.g., FTP, SMTP, Telnet) to work with a firewall. The book also includes a complete list of resources, including the location of many publicly available firewall construction tools. The book is divided into four parts: Part I discusses Internet threats, the benefits of firewalls, overall security strategies, and a summary of Internet services and their security risks. Part II describes possible firewall designs and general terms and concepts, how to protect the bastion host in your firewall configuration, how to build proxying and packet filtering firewalls, and how to configure Internet services to operate with a firewall. Part III describes how to maintain a firewall, develop a security policy, and respond to a security incident. Part IV contains appendic

This book is part of the Networking Technology Series from Cisco Press, which offers networking professionals valuable information for constructing efficient networks, understanding new technologies, and building successful careers.

Learn how to protect your network with this guide to building complete and fully functional network security tools that meet the needs of your company.

The business case for network security: advocacy, governance, and ROI addresses the needs of networking professionals and business executives who seek to assess their organization’s risksand objectively quantify both costs and cost savings related to network security technology investments. This book covers the latest topics in network attacks and security. It includes a detailed security-minded examination of return on investment (ROI) and associated financial methodologies that yield both objective and subjective data. The book also introduces and explores the concept of return on prevention (ROP) and discusses the greater implications currently facing corporations, including governance and the fundamental importance of security, for senior executives and the board.

The number of models available in neural network literature is quite large. Very often the treatment is mathematical and complex. This book provides illustrative examples in C++ that the reader can use as a basis for further experimentation. A key to learning about neural networks to appreciate their inner workings is to experiment. Neural networks, in the end, are fun to learn about and discover. Although the language for description used is C++, you will not find extensive class libraries in this book. With the exception of the backpropagation simulator, you will find fairly simple example programs for many different neural network architectures and paradigms. Since backpropagation is widely used and also easy to tame, a simulator is provided with the capacity to handle large input data sets. You use the simulator in one of the chapters in this book to solve a financial forecasting problem. You will find ample room to expand and experiment with the code presented in this book.

Конвергенция сетей и услуг связи в значительной степени основывается на технологиях компьютерной телефонии 3-го поколения. Рассматриваемые в книге достижения этой бурно развивающейся индустрии реализуются сегодня в Call-центрах и приходящих им на смену Web-контакт-центрах, в разнообразных узлах услуг (Service Nodes), в различных системах и средствах организации новых инфокоммуникационных видов обслуживания.

Эта книга облегчит и сделает максимально эффективной подготовку к сертификационному экзамену Cisco Certified Internetwork Expert (350-001). Написанное экспертами по объединенным сетям, учебное руководство включает в себя:- Предварительный оценочный тест, который помогает определить направление вашей подготовки- Целенаправленное освещение технологий, используемых в сетевых комплексах Cisco- Контрольные вопросы с пояснениями- Подробный анализ всех экзаменационных заданий:- Иерархическая структура сети- Общие стандарты транспорта- Настройка и управление IOS- Frame Relay и Х.25- Отказоустойчивость- Основы TCP/IP- Протоколы внутреннего шлюза- Протоколы граничного шлюза- Взаимодействие протоколов маршрутизации IP- Преобразование сетевых адресов- Маршрутизация групповых IP-рассылок- Обзор комплексных услуг Cisco- Мосты- Коммутация канального уровня- ATM и его эмуляция для локальной сети- Обеспечение безопасности сети

CCNP Practical Studies: Remote Access (CCNP Self-Study) prepares readers for the CCNP 642-821 BCRAN exam and for workplace challenges in implementing remote access network applications. Designed as a topic-by-topic guide of how to apply remote access concepts in a real network setting, this book is useful in preparing a CCNP candidate for the general exam questions by providing a better understanding of how remote access really works. It is also essential in preparing candidates for the new simulation-based questions that are on the Cisco certification exams. Finally, it serves anyone wanting a guide to real-world application of these concepts, regardless of certification interest.

Изучение книги Настройка коммутаторов Cisco - это недорогой и эффективный способ подготовки к последней версии экзамена Cisco по коммутации (640-504). Учебное руководство написано двумя экспертами в области сетевых технологий и содержит следующие элементы подготовки: Предварительную оценочную контрольную работу, помогающую направить усилия по подготовке к экзамену в правильное русло Тематическое рассмотрение коммутационных технологий Cisco Письменные и практические лабораторные работы для закрепления материала Трудные вопросы для повторения