If you work at all with Internet-facing solutions, you know that the lack of an identity metasystem is a critical vulnerability in the design. Various consortiums have worked to define a system of identity–a platform-agnostic way of communicating and validating claims of identity. If you work with identity solutions or structures, you will find Beginning Information Cards and CardSpace: From Novice to Professional essential to understanding and successfully implementing CardSpace solutions.

Topics range from fundamental discussion of identity–including identity concepts, laws of identity, and the identity metasystem–to comprehensive coverage of Windows CardSpace. You'll learn what CardSpace is all about, where you can and should use it, and how you would implement it. Additionally, multiple case studies showcase different scenarios where the technology is employed.

• You'll learn the technology from someone who's done real implementations with major customers.
• Author Marc Mercurri works directly with the Windows CardSpace product group.
• High-quality demos with universal themes are applicable to your own work.

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Building Wireless Community Networks is about getting people online using wireless network technology. The 802.11b standard (also known as WiFi) makes it possible to network towns, schools, neighborhoods, small business, and almost any kind of organization. All that's required is a willingness to cooperate and share resources. The first edition of this book helped thousands of people engage in community networking activities. At the time, it was impossible to predict how quickly and thoroughly WiFi would penetrate the marketplace. Today, with WiFi-enabled computers almost as common as Ethernet, it makes even more sense to take the next step and network your community using nothing but freely available radio spectrum. This book has showed many people how to make their network available, even from the park bench, how to extend high-speed Internet access into the many areas not served by DSL and cable providers, and how to build working communities and a shared though intangible network. All that's required to create an access point for high-speed Internet connection is a gateway or base station. Once that is set up, any computer with a wireless card can log onto the network and share its resources. Rob Flickenger built such a network in northern California, and continues to participate in network-building efforts. His nuts-and-bolts guide covers:

• Selecting the appropriate equipment
• Finding antenna sites, and building and installing antennas
• Protecting your network from inappropriate access
• New network monitoring tools and techniques (new)
• Regulations affecting wireless deployment (new)
• IP network administration, including DNS and IP Tunneling (new)

His expertise, as well as his sense of humor and enthusiasm for the topic, makes Building Wireless Community Networks a very useful and readable book for anyone interested in wireless connectivity.

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Every year, nearly one in five businesses suffers a major disruption to its data or voice networks or
communications systems. Since 9/11 it has become increasingly important for companies to implement a
plan for disaster recovery. This comprehensive book addresses the operational and day-to-day security
management requirements of business stability and disaster recovery planning specifically tailored for the needs and requirements of an Information Security Officer.

This book has been written by battle tested security consultants who have based all the material, processes and problem- solving on real-world planning and recovery events in enterprise environments world wide.

John has over 25 years experience in the IT and security sector. He is an often sought management consultant for large enterprise and is currently a member of the Federal Communication Commission's Homeland Security Network Reliability and Interoperability Council Focus Group on Cybersecurity, working in the Voice over Internet Protocol workgroup.

James has over 30 years experience in security operations and technology assessment as a corporate security executive and positions within the intelligence, DoD, and federal law enforcement communities. He has a Ph.D. in information systems specializing in information security and is a member of Upsilon Pi Epsilon (UPE), the International Honor Society for the Computing and Information Disciplines. He is currently an Independent Consultant.

· Provides critical strategies for maintaining basic business functions when and if systems are shut down
· Establishes up to date methods and techniques for maintaining second site back up and recovery
· Gives managers viable and efficient processes that meet new government rules for saving and protecting data in the event of disasters

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In 2002 voice over IP will constitute more than 25% of all long distance voice calls, according to Network World. That’s more than a 30% ramp-up from 2001. The emergence of SIP, MPLS and new quality of service tools is making carrier grade voice over IP a service reality, and a potentially huge margin booster and revenue driver for service providers. The first edition of Carrier Grade Voice over IP played a roll in VoIP growth, in less than year becoming an essential tool for carriers working to provide high quality IP telephony. This new edition vastly updates the SIP chapter, details MPLS, and takes the explanations of the previous edition a step further in a final chapter that shows, step by step, how to design working VoIP networks.

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Using information theory and fundamental theorems on source and channel coding, this book describes the basics of channel coding and advanced coding techniques known as turbo codes. A discussion of lock codes and convolutional codes, including input- and output-decoding algorithms and recursive-systematic convolutional codes, leads into coverage of trellis-coded modulations, which have primary applications in high-spectral efficiency transmissions. The book further distinguishes convolutional-turbo codes from block-turbo codes and presents coding and decoding principles for each family, concluding with the implementation of turbo codes in circuits.

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This book is a practical guide for developers and information technology managers. It is focused on conveying what elements make up a portal and how to construct these elements using the Microsoft development platform. It is a combination of introductions to key concepts, suggestions for portal planning, and limited detailed technical instruction by way of examples that relate to all the main portal elements. Most chapters describe what to build and then show how to build it.

The most important section for managers is the first five chapters. These chapters address the portal from the perspective of a user and provide valuable background that can help managers form reasonable project expectations. The focus is not on individual products and features. Indeed, portals with the functionality described here could be implemented with a number of different technologies and products, and these are introduced in the second part of the book.

Developers will spend more time with the remainder of the book to understand how to fill the gap between products and where each portal service belongs. They will want to review the early chapters to understand the vision for a .NET portal and to ensure that the IT manager doesn't know something that they don't. These later chapters do not attempt to restate the vast amount of information in help files and product documentation for the products used in our examples. Rather, our goal is to create a higher-level overview that encompasses multiple products and puts each product and feature in its proper place. We also highlight best practices and hints that are not found in the product documentation but can save many hours of work or frustration.

There are no prerequisites for grasping the material in this book, as it explains the anatomy of a portal from the ground up. Our goals are to provide a compelling vision for portals that can be applied to your business requirements and to explain in detail how this vision maps to the Microsoft .NET Framework and web services.

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The goal of this book is to introduce the reader to the C++ programming language and its applications to the field of Quantitative Finance. It is a self-contained introduction to the syntax of C++ in combination with its applications to current topics of interest. In particular, we develop libraries, frameworks and applications for a variety of derivatives models using numerical methods such as binomial and trinomial trees, finite difference methods (FDM) and the Monte Carlo (MC) method.

The book consists of three major parts. The first part concentrates on essential C++ syntax that must be learned before proceeding. The second part introduces generic programming and design pattern techniques and we show how to create libraries and data structures that we use in part three that deals with full applications. We also have written a number of chapters on topics related to the current book, for example a review of the C language, interfacing with Excel and an introduction to the Component Object Model (COM).

We have written this book for quantitative analysts, designers and other professionals who are involved in developing front office and trading systems. The book is structured in such a way that both novice and experienced developers can use it to write applications in Quantitative Finance. The book is also suitable for university students in finance, mathematics and other disciplines where C++ is used as the language for computation.

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In this book you learn everything you need to know about developing C# applications that access databases. If you are wondering why this is such an important topic, just consider how many applications use the functionality. At first glance, you might notice a few specialized ones such as Windows applications to view and edit human resources data or Web applications that display recent sport results. Look a bit deeper, however, and you quickly find that the vast majority of applications use database data in one form or another, even if it isn’t immediately obvious.

This book is the perfect starting point to learn about databases, and particularly about using MS SQL Server from .NET 2.0 applications written in C#. Over the course of the book, you learn the fundamentals of database technology, how the .NET Framework can be used to access databases, and how to get the most out of your code. Along the way you are presented with numerous helpful, easy-to-follow examples that demonstrate the techniques you need. Each example increases your understanding of a particular subject, and often provides you with tips and tricks that you can adapt to different contexts  in the future. Each chapter also includes exercises to reinforce key concepts, the answers to which are found at the back of the book.

The main idea behind the book is to present you with a solid understanding of the basics of database access in C#. You’ll also be exposed to many possibilities for future development. You will often learn about quite complicated techniques, but they are broken into simple steps and carefully explained. These explanations provide an appreciation for what is possible, and prepare you for handling additional resources about these subjects when you’ve finished the book. And you’ll be able to do that without facing instant despair at attempting to learn about a completely new subject because you’ll already know the basics of what you are doing.

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Scripting languages have played an important role in the information technology infrastructure for many years. They have been used for all kinds of tasks, ranging from job automation to prototyping and implementation of complex software projects. The Java development platform can also benefit from scripting concepts and languages. Java developers can use scripting languages in areas that are proven to be the most suitable for this technology. This synergy of the Java platform and scripting languages adds an extra quality to the overall software development process. As more Java developers are coming from web-oriented (i.e., HTML, JavaScript, a bit of PHP or JSP) backgrounds, more Java developers are turning to scripting as an option to increase code efficiency within their Java applications. In this book Bosanac describes the concepts behind scripting languages, summarizes solutions available to Java developers, and explores use cases and design patterns for applying scripting languages in Java applications.

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PHP 5 Recipes is essentially a cookbook of programming snippets. You will be able to search for the topic you are interested in and then find a sample you can integrate into your own projects. Each recipe has an overview, contains code listing, and is followed by an in-depth explanation of how the code works and where it might be applicable. This book will guide you through the PHP 5 functionality set. In Chapter 1, you will start with the basics, including a complete overview of what makes the PHP language what it is. In Chapter 2, you will enter the world of object-oriented programming and see the advancements in PHP’s fifth rendition. In Chapter 3, you will learn how to take care of math issues (with an object-oriented approach, of course); in Chapter 4, you will enter the flexible and powerful world of arrays. One issue that can be a constant battle for programmers is dates and times. Therefore, Chapter 5 covers date and time–related functionality. Chapter 6 covers how to work with everyone’s favorite virtual textile, strings. Chapter 7 covers files and directories and explains in detail how PHP 5 can deal with a server’s file structure. Once you have a good grasp of how to work with files and directories, you can then move into the rather amusing Chapter 8, which covers dynamic imaging; this chapter will teach you everything you need to know about creating images that can captivate the Internet and its audience. Because working with regular expressions can be a difficult endeavor, Chapter 9 provides you with some custom expressions to help you improve your programming skills. Then you will return to the basics; Chapter 10 covers variables, and Chapter 11 explains functions. Don’t be fooled, though—PHP 5 has added a lot of functionality that will make these two chapters interesting and informative. We will then get away from the basic programming content and cover web basics. In Chapter 12, you will understand how to use some of the bells and whistles available in PHP 5. Forms will follow in Chapter 13, which contains a lot of functionality for providing a web interface to your potential development projects. Chapter 14 is on the cutting edge of technology in that it provides an in-depth listing of markup recipes. Things will then wind down to Chapter 15, which covers MySQL and brings you up to speed on the technology associated with the new mysqli extension; these recipes use MySQL 4.1. Lastly, Chapter 16 provides an informative look at Internet services.

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