Acknowledgements

When I first floated the idea of writing an Nmap book to the nmap-hackers mailing list, I was inundated with suggestions and offers to help. This outpouring of enthusiasm convinced me to proceed. My complete naivety about how much work was involved also contributed to my decision. It has been quite an undertaking, but what kept me going chapter by chapter was a private review group called the nmap-writers. They provided invaluable feedback, advice, and detailed review notes throughout the process. In particular, I would like to thank the following people:

David Fifield is listed first (everyone else is alphabetical) because he was a tremendous help during the book writing process. He solve a number of technical Docbook problems, created many of the final illustrations from my terrible drafts, dramatically improved the index, helped with proofreading, and even wrote Chapter 12, Zenmap GUI Users' Guide.
Matt Baxter allowed the use of his beautiful TCP/IP header diagrams (in the section called “TCP/IP Reference”). Several other diagrams in this book were done in that style to match.
Saurabh Bhasin contributed detailed feedback on a regular basis.
Mark Brewis could always be counted on for good advice.
Ellen Colombo was a big help from the beginning.
Patrick Donnelly helped improve Chapter 9, Nmap Scripting Engine.
Brandon Enright printed out the whole book and reviewed it chapter by chapter.
Brian Hatch has always been a big help.
Loren Heal was a continual source of ideas.
Dan Henage provided advice and proofread numerous chapters.
Tor Houghton reviewed every chapter, probably giving me more feedback than anyone else.
Doug Hoyte documented the many Nmap features he added, and also handled most of the book indexing.
Marius Huse Jacobsen reviewed many chapters, providing detailed feedback.
Kris Katterjohn performed thorough reviews of several chapters.
Eric Krosnes sent useful technical review feedback and also regularly nagged me about book progress. This was helpful since I didn't have a traditional editor to do so.
Vlad Alexa Mancini created the Nmap eye logo for the cover (and the Nmap web site).
Michael Naef kindly reviewed many chapters.
Bill Pollock of No Starch Press was always happy to provide advice and answer book publishing questions based on his decades of experience.
David Pybus was one of the most frequent contributors of ideas and proofreading.
Tyler Reguly helped by reviewing multiple chapters just when it was most needed.
Chuck Sterling provided both high level advice and detailed proofreading of several chapters.
Anders Thulin provided detailed reviews of many chapters.
Bennett Todd sent dozens of suggestions.
Diman Todorov wrote the first version of Chapter 9, Nmap Scripting Engine
Catherine Tornabene read many chapters and sent extremely detailed feedback.

Technology Used to Create This Book

As an author of open source tools myself, I'm a big believer in their power and capability. So I made an effort to use them wherever possible in creating this book. I wasn't about to write it in Microsoft Word and then handle layout with Adobe FrameMaker!

Nmap Network Scanning was written with the GNU Emacs text editor in the DocBook XML format.

The free online chapters are created from the XML using Norman Walsh's XSL Stylesheets and the xsltproc XSL processor.

The print version also uses Norman's stylesheets and xsltproc, but the output is to the XSL-FO format. An XSL-FO processor is then used to build a PDF. I would like to use Apache FOP for this, but a footnote-related bug prevents this, so I switched to the RenderX XEP Engine. XEP is proprietary, but at least it runs on Linux. I hope to switch back to FOP after the footnote bug is fixed.

Cover layout was done with Scribus. Raster graphics for the cover and internal illustrations were created with The Gimp, while Inkscape was used for vector graphics.

Subversion was used for revision control and the free web chapters are serviced by Apache httpd.