Online Companion

A book about technology cannot be complete without a companion web site. To fully appreciate this book, you need to visit http://www.apachesecurity.net, where I am making the relevant material available in electronic form. Some of the material available is:

Configuration data examples, which you can copy and paste to use directly in your configuration.
The tools I wrote for the book, together with documentation and usage examples. Request new features, and I will add them whenever possible.
The links to all resources mentioned in the book, grouped according to their appearance in chapters. This will help you avoid retyping long links. I intend to maintain the links in working order and to provide copies of resources, should they become unavailable elsewhere.

I hope to expand the companion web site into a useful Apache security resource with a life on its own. Please help by sending your comments and your questions to the email address shown on the web site. I look forward to receiving feedback and shaping the future book releases according to other people's experiences.

Conventions Used in This Book

Throughout this book certain stylistic conventions are followed. Once you are accustomed to them, you will distinguish between comments, commands you need to type, values you need to supply, and so forth.

In some cases, the typeface of the terms in the main text and in code examples will be different. The details of what the different styles (italic, boldface, etc.) mean are described in the following sections.

Programming Conventions

In command prompts shown for Unix systems, prompts that begin with # indicate that you need to be logged in as the superuser ( root username); if the prompt begins with $ , then the command can be typed by any user .

Typesetting Conventions

The following typographical conventions are used in this book:

Italic

Indicates new terms, URLs, email addresses, filenames, file extensions, pathnames, directories, usernames, group names, module names, CGI script names , programs, and Unix utilities

Constant width

Indicates commands, options, switches, variables , functions, methods , HTML tags, HTTP headers, status codes, MIME content types, directives in configuration files, the contents of files, code within body text, and the output from commands


Constant width bold

Shows commands or other text that should be typed literally by the user

Constant width italic

Shows text that should be replaced with user-supplied values

This icon signifies a tip, suggestion, or general note.

This icon indicates a warning or caution.

Using Code Examples

This book is here to help you get your job done. In general, you may use the code in this book in your programs and documentation. You do not need to contact us for permission unless you're reproducing a significant portion of the code. For example, writing a program that uses several chunks of code from this book does not require permission. Selling or distributing a CD-ROM of examples from O'Reilly books does require permission. Answering a question by citing this book and quoting example code does not require permission. Incorporating a significant amount of example code from this book into your product's documentation does require permission.

We appreciate, but do not require, attribution. An attribution usually includes the title, author, publisher, and ISBN. For example: " Apache Security by Ivan Ristic. Copyright 2005 O'Reilly Media, Inc., 0-596-00724-8."

If you feel your use of code examples falls outside fair use or the permission given above, feel free to contact us at permissions@oreilly.com.