This book covers middle-tier programming with PHP.
PHP is a server-side, HTML-embedded scripting language. It is an open source technology, rapidly gaining popularity as a scripting language for people running dynamic websites. One of its major attractions over Perl, JavaScript and other scripting languages is that PHP has a built-in database integration layer and seamless IP connectivity, with LDAP and TCP as well as the IMAP mail interface. Features;
Real world, practical experience and techniques
From installation and configuration of the PHP engine to advanced dynamic application design
Definitive coverage of core PHP language and database addressing:
MySQL is covered in depth.
Practical e-commerce and business scripting including database application development, together with PHP and XML applications.
LDAP connectivity addressed.

One of the greatest strengths of the Perl programming language is its ability to manipulate large amounts of data. Database programming is therefore a natural fit for Perl, not only for business applications but also for CGI-based web and intranet applications.

The primary interface for database programming in Perl is DBI. DBI is a database-independent package that provides a consistent set of routines regardless of what database product you use—Oracle, Sybase, Ingres, Informix, you name it. The design of DBI is to separate the actual database drivers (DBDs) from the programmer's API, so any DBI program can work with any database, or even with multiple databases by different vendors simultaneously.

"Programming the Perl DBI" is coauthored by Alligator Descartes, one of the most active members of the DBI community, and by Tim Bunce, the inventor of DBI. For the uninitiated, the book explains the architecture of DBI and shows you how to write DBI-based programs. For the experienced DBI dabbler, this book reveals DBI's nuances and the peculiarities of each individual DBD.

The book includes:

An introduction to DBI and its design

How to construct queries and bind parameters

Working with database, driver, and statement handles

Debugging techniques

Coverage of each existing DBD

A complete reference to DBI

This is the definitive book for database programming in Perl.

The subject of security never strays far from the minds of IT workers, for good reason. If there is a network with even just one connection to another network, it needs to be secured. RADIUS, or Remote Authentication Dial-In User Service, is a widely deployed protocol that enables companies to authenticate, authorize and account for remote users who want access to a system or service from a central network server. Originally developed for dial-up remote access, RADIUS is now used by virtual private network (VPN) servers, wireless access points, authenticating Ethernet switches, Digital Subscriber Line (DSL) access, and other network access types. Extensible, easy to implement, supported, and actively developed, RADIUS is currently the de facto standard for remote authentication. RADIUS provides a complete, detailed guide to the underpinnings of the RADIUS protocol, with particular emphasis on the utility of user accounting. Author Jonathan Hassell draws from his extensive experience in Internet service provider operations to bring practical suggestions and advice for implementing RADIUS. He also provides instructions for using an open-source variation called FreeRADIUS. "RADIUS is an extensible protocol that enjoys the support of a wide range of vendors," says Jonathan Hassell. "Coupled with the amazing efforts of the open source development community to extend RADIUS's capabilities to other applications-Web, calling card security, physical device security, such as RSA's SecureID-RADIUS is possibly the best protocol with which to ensure only the people that need access to a resource indeed gain that access." This unique book covers RADIUS completely, from the history and theory of the architecture around which it was designed, to how the protocol and its ancillaries function on a day-to-day basis, to implementing RADIUS-based security in a variety of corporate and service provider environments. If you are an ISP owner or administrator, corporate IT professional responsible for maintaining mobile user connectivity, or a web presence provider responsible for providing multiple communications resources, you'll want this book to help you master this widely implemented but little understood protocol.

Starts with the basics of Red Hat, the leading Linux distribution in the U.S., such as network planning and Red Hat installation and configurationOffers a close look at the new Red Hat Enterprise Linux 4 and Fedora Core 4 releasesNew chapters cover configuring a database server, creating a VNC server, monitoring performance, providing Web services, exploring SELinux security basics, and exploring desktopsDemonstrates how to maximize the use of Red Hat Network, upgrade and customize the kernel, install and upgrade software packages, and back up and restore the file systemThe four CDs contain the full Fedora Core 4 distribution

This is the definitive book for network administrators and IS professionals implementing and maintaining remote access! In-depth coverage shows you how to assess your remote access needs and identify appropriate solutions for different platforms. Includes discussion of remote access configuration, security considerations, troubleshooting, daily maintenance, and disaster recovery.

Linux is the most exciting development today in the UNIX world — and some would say in the world of the PC-compatible. A complete, UNIX-compatible operating system developed by volunteers on the Internet, Linux is distributed freely in electronic form and for low cost from many vendors. Its software packages include the X Window System (X11R6); TCP/IP networking (including SLIP, PPP, and NFS support); popular software tools such as Emacs and TeX; a complete software development environment including C, C++, Perl, Tcl/Tk, and more; libraries, debuggers, multimedia support, scientific and database applications, and much more. Developed first on the PC, it has been ported to many other architectures, and a POSIX-compliant version has even been developed.

Running Linux explains everything you need to understand, install, and start using the Linux operating system. This includes a comprehensive installation tutorial, complete information on system maintenance, tools for document development and programming, and guidelines for network and Web site administration.

New topics in the second edition include:

Printer configuration, management, and useConfiguration of network clients for NFS and NISExpanded information on configuring a wide range of hardware devicesUpdated configuration information for the kernel and XFree86

The desktop reference to SCO UNIX and Open Desktop(R), this version of UNIX in a Nutshell shows you what's under the hood of your SCO system. It isn't a scaled-down quick reference of common commands, but a complete reference containing all user, programming, administration, and networking commands. Contents include:All commands and optionsShell syntax for the Bourne, Korn, C, and SCO shellsPattern matching with vi, ex, sed, and awk commandsCompiler and debugging commands for software developmentNetworking with email, TCP/IP, NFS, and UUCPThis edition of UNIX in a Nutshell is the most comprehensive SCO quick reference on the market, a must for any SCO user. You'll want to keep SCO UNIX in a Nutshell close by as you use your computer: it'll become a handy, indispensable reference for working with your SCO system.

Influence search engine results and bring targeted traffic to your Web site with an hour a day of search engine optimization (SEO). Drawing on years of experience as successful SEO consultants, Jennifer Grappone and Gradiva Couzin provide detailed, practical, and often surprisingly simple techniques for improving results. Their simple strategies include setting SEO goals, site optimization, developing and implementing a strategy that might include both free and paid efforts, and tools for monitoring trends, measuring the competition, and tracking results.

sed & awk describes two text processing programs that are mainstays of the UNIX programmer's toolbox. sed is a "stream editor" for editing streams of text that might be too large to edit as a single file, or that might be generated on the fly as part of a larger data processing step. The most common operation done with sed is substitution, replacing one block of text with another. awk is a complete programming language. Unlike many conventional languages, awk is "data driven" — you specify what kind of data you are interested in and the operations to be performed when that data is found. awk does many things for you, including automatically opening and closing data files, reading records, breaking the records up into fields, and counting the records. While awk provides the features of most conventional programming languages, it also includes some unconventional features, such as extended regular expression matching and associative arrays. sed & awk describes both programs in detail and includes a chapter of example sed and awk scripts. This edition covers features of sed and awk that are mandated by the POSIX standard. This most notably affects awk, where POSIX standardized a new variable, CONVFMT, and new functions, toupper() and tolower(). The CONVFMT variable specifies the conversion format to use when converting numbers to strings (awk used to use OFMT for this purpose). The toupper() and tolower() functions each take a (presumably mixed case) string argument and return a new version of the string with all letters translated to the corresponding case. In addition, this edition covers GNU sed, newly available since the first edition. It also updates the first edition coverage of Bell Labs nawk and GNU awk (gawk), covers mawk, an additional freely available implementation of awk, and briefly discusses three commercial versions of awk, MKS awk, Thompson Automation awk (tawk), and Videosoft (VSAwk).

This second edition of sendmail covers sendmail Version 8.8 from Berkeley and the standard versions available on most systems. It is far and away the most comprehensive book ever written on sendmail, the program that acts like a traffic cop in routing and delivering mail on Unix-based networks. Although sendmail is used on almost every Unix system, it's one of the last great uncharted territories—and most difficult utilities to learn—in Unix system administration.

This book provides a complete sendmail tutorial, plus extensive reference material on every aspect of the program. What's more, it's authoritative, having been coauthored by Eric Allman, the developer of sendmail. In addition to Version 8.8, it covers earlier versions available on many systems, such as those found on Sun workstations. Part One is a tutorial on understanding sendmail; Part Two covers the building, installation, and m4 configuration of sendmail; Part Three covers practical issues in sendmail administration; Part Four is a comprehensive reference section; and Part Five consists of appendixes and a bibliography.

In this second edition an expanded tutorial demonstrates hub's cf file and nullclient.mc. Other topics include the #error delivery agent, sendmail's exit values, MIME headers, and how to set up and use the user database, mailertable, and smrsh. Solution-oriented examples throughout the book help you solve your own sendmail problems. Plus, this edition is cross-referenced with section numbers.