Internet Forensics shows you how to nab the bad guys by extracting the information that lies hidden in every email message, web page, and web server on the Internet. Real-world examples illustrate all the major techniques discussed. Sample Chapter 4: Obfuscation is available online.

Asterisk: The Future of Telephony -- Many organizations are drawn to Internet telephony's promise of cost savings, and its ability to move data, images, and voice traffic over the same connection. Asterisk, an open source system than runs on Linux, offers the best option. This guide covers installing, configuring, and integrating Asterisk with existing phone systems, without the need for additional hardware. Sample Chapter 5: Dialplan Basic is available online.

In Beyond Java, Bruce Tate, author of the Jolt Award-winning Better, Faster, Lighter Java, will teach you what a new language needs to succeed, so when things do change, you'll be more prepared. And even if you think Java is here to stay, you can use the best techniques from frameworks introduced in this book to improve what you're doing in Java today.

Essential PHP Security explains the types of attacks that hackers use on web sites and how to correctly configure Apache and PHP to guard against them. The author of Essential PHP Security, Chris Shiflett, is an internationally recognized expert in the field of PHP security and this book shows developers how to guard against attacks by writing secure PHP code. Sample Chapter 4: Sessions and Cookies are available online.

Windows Server 2003 Network Administration -- Ideal for system administrators and network managers, this essential guide is divided into three distinct sections: fundamental concepts, tutorial, and reference. The first three chapters are a basic discussion of the network protocols and services. The remaining chapters provide a how-to tutorial for planning, installing, and configuring various important network services. The book concludes with three appendixes that are technical references for various configuration options.Sample Chapter 14, Troubleshooting TCP/IP (PDF), is available free online.

What Is Web 2.0 -- Defining just what Web 2.0 means still engenders much disagreement. Some decry it as a meaningless marketing buzzword, while others have accepted it as the new conventional wisdom. Tim O'Reilly attempts to clarify just what we mean by Web 2.0, digging into the implications of viewing the web as a platform, which applications fall squarely under its purview, and which do not.

Ambient Findability -- Written by best-selling author Peter Morville, this thought-provoking book describes the future of information and connectivity, examining how the melding of innovations like GIS and the internet will impact the global marketplace and society at large. Focused on information literacy, information architecture, and usability as critical components, this book doesn't preach or pretend to know all the answers; rather, Morville presents research, stories, and examples for support. Sample Chapter 1, Lost and Found (PDF), is available free online.

Learning SQL -- This introductory guide gets you up and running on SQL in short order. A series of chapter exercises teaches you how to generate, manipulate, and retrieve the data stored in your organization's database. Ideal for anyone writing applications, performing administrative tasks, or generating reports. Sample Chapter 3, Query Primer (PDF), is available free online.