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

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.

This book contains simple examples to provide illustration. The data used in the examples contains information that is not based on any real companies or people. The author and publisher of this book have used their best efforts in preparing this book. The author and publisher make no warranty of any kind, expressed or implied, with regard to the documentation and examples contained in this book. The author and publisher shall not be liable in any event for incidental or consequential damages in connection with, or arising out of the use of, information in this book. The views expressed in this book are the views of the author and do not necessarily reflect the views of the IBM Corporation. This book is not sponsored in any part, or in any manner, by IBM.

The Concise Guide to DNS and BIND provides the technical depth and expert-level information needed to understand and administer DNS and BIND. Domain Name System (DNS) is a distributed Internet directory service. It is used mainly to translate between domain names and IP addresses, and to control Internet email delivery. Most Internet services rely on DNS to work, and if DNS fails, Web sites cannot be located and email delivery stalls. BIND (Berkeley Internet Name Daemon) is an implementation of the Domain Name System (DNS) protocols. Some of the topics covered are setting up a DNS server and client, compiling and configuring BIND, and setting up root servers on private networks. The Concise Guide to DNS and BIND also features expert knowledge on firewall rules, Dynamic DNS (DDNS), debugging and logging, plus new features in BIND 8.2.2. The book also offers introductory information on BIND 9.

Multiprotocol Label Switching (MPLS) provides the mechanisms to perform label switching, which is an innovative technique for high-performance packet forwarding. This book provides an in-depth study of MPLS technology, including MPLS theory and configuration, network design issues, and case studies. The MPLS/VPN architecture and all of its mechanisms are explained with configuration examples and suggested deployment guidelines. MPLS and VPNs provides the first in-depth discussion particular to Ciscos MPLS architecture. Multiprotocol Label Switching and Virtual Private Networks covers MPLS theory and configuration, network design issues, and case studies as well as one major MPLS application: MPLS-based VPNs. The MPLS/VPN architecture and all of its mechanisms are explained with configuration examples, suggested design and deployment guidelines, and extensive case studies.

Welcome to the MCSE Training Kit—Microsoft Windows 2000 Network Infrastructure Administration. This book will teach you how to plan your network infrastructure around features supported by Windows 2000. Issues such as network protocol and services are introduced and compared based on the requirements of your organization. This includes using the Internetwork Packet Exchange/ Sequenced Packet Exchange (IPX/SPX)-compatible protocol to integrate with Novell NetWare. The primary focus of network protocols throughout this book is Transmission Control Protocol/Internet Protocol (TCP/IP) because it is the Internet-standard protocol and is the best choice for enterprise networks. You will learn how to utilize, manage, and configure the TCP/IP protocol and use features such as NetBIOS, WINS, DHCP, and DNS. You will also learn how to configure, manage, and troubleshoot routing and remote access, including setting up virtual private networks (VPNs).

Considering Europe as a whole rather than as a mosaic of individual states, François Crouzet presents here an accessible, engaging history of the European economy during the second millennium. Stressing the common economic institutions shared over time by the different regions of Europe and the networks of relations that have linked them, Crouzet examines pan-European changes and integration rather than merely the particular experiences of individual countries. A History of the European Economy, 1000-2000 goes beyond addressing the historical ramifications of trade in the European economy to encompass problems such as the diffusion of technology, the migration of capital and labor, diasporas and minorities, and national diversity. By stressing the historical origins of the drive toward European integration and its progress all the way to the birth of the euro, Crouzet delivers an original and comprehensive overview of European economic history.

Книга посвящена систематическому изложению теории искусственных нейронных сетей, аппарату нечеткой логики и так называемым гибридным нейронным сетям. Показана связь между моделями трех указанных направлений и их применение к задачам управления и принятия решений. Рассмотрена пpограммная реализация данных моделей с помощью инструментальных средств математической системы MATLAB 5.2/5.3 - пакетов Neural Networks Toolbox (нейронные сети) и Fuzzy Logic Toolbox (пакет нечеткой логики).

Increasing numbers of ISPs have begun implementing multicast infrastructure. Soon the Internet will provide multicast connectivity between any two points on the Internet the way it provides for unicast traffic today. Long-evolving protocols are reaching maturity, and enterprise networks and ISPs around the world are ramping up their multicast infrastructure. Now, more than ever, network engineers must be ready to deal with new applications that capitalize on the simultaneous, efficient delivery of data and imagery to multiple recipients.

To configure and maintain an operating system is serious business. With UNIX and its wide variety of "flavors," it can be especially difficult and frustrating, and networking with UNIX adds still more challenges.UNIX Administration: A Comprehensive Sourcebook for Effective Systems & Network Management is a one-stop handbook for the administration and maintenance of UNIX systems and networks. With an outstanding balance of concepts and practical matters, it covers the entire range of administrative tasks,from the most basic to the advanced, from system startup and shutdown to network security and kernel reconfiguration. While focusing on the primary UNIX platforms, the author discusses all of the most common UNIX "flavors," including Solaris, Linux, HP-UX, AIX and SGI IRIX. Three chapters of case studies offer a practical look at UNIX implementation issues: UNIX installation, disk space upgrade, and several emergency situations that every administrator must expect to face at some point.Diverse yet detailed, filled with examples and specific procedures, this is the one book that both the novice and the seasoned professional need to learn UNIX administration and effectively perform their daily system and network-related duties.

Ramachandran, one of the world's leading brain researchers (Phantoms in the Brain, CH, March 1999; Encyclopedia of Human Behavior, CH, October 1994) has produced the most comprehensive, current, and authoritative reference in neuroscience. More than 350 experts contributed such chapters as "Visual and Auditory Integration," "Violence and the Brain," "Brain Anatomy and Networks," and "Neurodegenerative Disorders." Chapters are arranged alphabetically by topic, each beginning with an outline and glossary. Illustrations are excellent, and there are numerous tables and appendixes. A bibliography concludes each chapter. Essential for medical libraries, life science collections, and university libraries.

Quality of service (QoS) is the set of techniques designed to manage network resources. QoS refers to the capability of a network to provide better service to selected network traffic over various LAN and WAN technologies. The primary goal of QoS is to provide flow priority, including dedicated bandwidth, controlled jitter and latency (required by some interactive and delay-sensitive traffic), and improved loss characteristics. While QoS has become an essential technology for those organizations rolling out a new generation of network applications such as real-time voice communications and high-quality video delivery, most of the literature available on this foundation technology for current and future business applications focuses on IP QoS. Equally important is the application of QoS in the campus LAN environment, which is primarily responsible for delivering traffic to the desktop. Cisco Catalyst QoS is the first book to concentrate exclusively on the application of QoS in the campus environment. This practical guide provides you with insight into the operation of QoS on the most popular and widely deployed LAN devices: the Cisco Catalyst family of switches. Leveraging the authors' extensive expertise at Cisco in the support of Cisco Catalyst switches and QoS deployment, the book presents QoS from the campus LAN perspective. It explains why QoS is essential in this environment in order to achieve a more deterministic behavior for traffic when implementing voice, video, or other delay-sensitive applications. Through architectural overviews, configuration examples, real-world deployment case studies, and summaries of common pitfalls, you will understand how QoS operates, the different components involved in making QoS possible, and how QoS can be implemented on the various Cisco Catalyst platforms to enable truly successful end-to-end QoS applications. 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.

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.

Expert guidance on how to successfully build and deploy Mobile virtual Private Networks.

This guide explains how data networks operate, why data systems are becoming more complicated, and how data networks are changing to permit broadband services and applications.

Today's home wireless networks offer tremendous advantages over hard-wired networks-among them, unprecedented portability and, of course, the freedom from wires strung all over your house! Unless you have a firm grasp on all the latest networking technologies, though, wireless networks won't free you from digging your way through a collection of confusing, jargon-riddled manuals; dealing with obscure configuration modes; and finally, hoping somehow it will all work once you flip the switch. If you want a home wireless network without the headaches, then Complete Wireless Home Networking: Windows XP Edition, by wireless networking authority Paul Heltzel, is for you. Written in an engaging, conversational style, this book offers reliable advice on determining your equipment needs, then guides you through each step of building a wireless network-installation, setup, configuration, and troubleshooting. And with minimal fuss, you'll have a home wireless network that's fast, secure, and optimized for your physical environment and computing requirements. Whether you're accessing the Internet from your back yard, sending jobs to a printer downstairs, or transferring files effortlessly, you'll wonder how you got by without a wireless network.

Hey, you know your way around a desktop -- so now dig into the Windows operating system and really put its security features to work! Covering Windows XP Professional, Windows XP Home Edition, and Windows 2000 Professional, this supremely organized reference packs hundreds of timesaving solutions, checklists, troubleshooting tips, and workarounds -- all in concise, fast-answers format. Learn the essential tools and techniques for tightening up security on your personal computer or network, including ways to fend off viruses, hackers, spam, denial-of-service attacks, and other threats. Discover how to button up your Virtual Private Networks (VPNs), remote access, and wireless networking services. And take ultimate control of security with advanced solutions such as file encryption, port blocking, Internet Protocol Security, group policies, and tamper-proofing the Registry.

Networking professionals: At last, comprehensive coverage of content switching technology is in your hands! Optimizing Network Performance with Content Switching: Server, Firewall, and Cache Load Balancing, by topic experts Matthew Syme and Philip Goldie, provides sharp insights into this wide-ranging, rapidly changing technology. You'll learn the concepts, the background, and the architectures of content switching, as well as how it works and where and why it should be deployed to maximize the performance of your networks and servers. Fueled by increasing bandwidth and ever-richer content, this technology is fast becoming a standard in enterprise and ISP networks.

This book prepares you for Cisco’s Building Cisco Multilayer Switched Networks (BCMSN) exam, 642-811.

This book is now in its fourth edition. Each edition has corresponded to a different phase in the way computer networks were used. When the first edition appeared in 1980, networks were an academic curiosity. When the second edition appeared in 1988, networks were used by universities and large businesses. When the third edition appeared in 1996, computer networks, especially the Internet, had become a daily reality for millions of people. The new item in the fourth edition is the rapid growth of wireless networking in many forms.