Table of Contents

jeff duntemann's drive-by wi-fi guide
Jeff Duntemann's Drive-By Wi-Fi Guide
by Jeff Duntemann  ISBN:1932111743
Paraglyph Press © 2003 (446 pages)

Everything you need to know to design, build, protect, and extend a Wi-Fi wireless network!

Table of Contents
Jeff Duntemann’s Drive-By Wi-Fi Guide
Part 1 - Making Connections by Cutting the Cables
Chapter 1 - Wi-Fi—What, Why, Where, Who, and How?
Chapter 2 - Networking, Ethernet-Style
Chapter 3 - Your Net and the Internet
Chapter 4 - Designing Your Wi-Fi Network
Chapter 5 - Wi-Fi Communities
Part 2 - What You Need and What to Do With It
Chapter 6 - Access Points and Gateways
Chapter 7 - Client Adapters
Chapter 8 - Antennas, Cables, and Connectors
Chapter 9 - Putting It Together and Testing It Out
Chapter 10 - Wi-Fi Warriors on the Road
Part 3 - Un-Wired Security
Chapter 11 - The Problem of the Speckled Axe
Chapter 12 - What Hackers Can Do and How You Can Thwart Them
Chapter 13 - WEP (Wired Equivalent Privacy)
Chapter 14 - Setting Up Security
Part 4 - Practice and Projects
Chapter 15 - The Tin Can Bandwidth Expander Project
Chapter 16 - Bridging Two Networks
Chapter 17 - The Parabolic Mesh Reflector Project
Chapter 18 - Going Wardriving
Chapter 19 - NetStumbler’s Log Files
Appendix A - Directory of Suppliers
Appendix B - FCC Regulations Governing Wi-Fi
Appendix C - Finding Your TCP/IP Configuration Data
Encyclopedia of 802.11 Standards
List of Figures
List of Tables
List of Examples

You don’t have to knock holes in your walls to network your computers and share your family’s Internet connection. Wi-Fi connects computers, printers, video cameras and game consoles into a fast Ethernet network via microwaves. In this book, legendary tech teacher, wireless expert, and best-selling author Jeff Duntemann explains how to make Wi-Fi work for you. It’s easy to design, build, test, and troubleshoot your network, and then implement simple security measures that will make the drive-by-hackers give up and haunt someone else’s network instead. You, too, can extend the range of your Wi-Fi network by a factor of 10 by Jeff’s insider techniques and objects as simple as a spaghetti sauce can. With two cans, you can link networks blocks apart. (No string—or wires—required). As Jeff would put it: “Ladies and gentlemen, network cables have left the building!”

In this book you will learn:

  • Wired and wireless network basics
  • Wi-Fi network design and implementation
  • All about Wired Equivalent Privacy and wireless security
  • Construction of Wi-Fi gain antennas
  • How to bridge Wi-Fi networks across distances
  • Ethical wardriving and wardriving data analysis

About the Author

Jeff Duntemann is an author, editor, programmer, lecturer, and technology columnist, with over a dozen books under his belt, including the best-selling Assembly Language Step-by-Step and Delphi Programming Explorer, Jeff is the former editor-in-chief of PC Techniques Magazine and Visual Developer. He has a strong background in electronics, and holds ham radio callsign K7JPD.

Jeff Duntemann's Drive-By Wi-Fi Guide

Jeff Duntemann

Keith Weiskamp

Jeff Duntemann

Vice President, Sales, Marketing, and Distribution
Steve Sayre

Vice President, International Sales and Marketing
Cynthia Caldwell

Editorial Director
Sharon Linsenbach

Production Manager
Kim Eoff

Jeff Duntemann's Drive-By Wi-Fi Guide

Copyright © 2003 Paraglyph Press, Inc. All rights reserved.

This book may not be duplicated in any way without the express written consent of the publisher, except in the form of brief excerpts or quotations for the purposes of review. The information contained herein is for the personal use of the reader and may not be incorporated in any commercial programs, other books, databases, or any kind of software without written consent of the publisher. Making copies of this book or any portion for any purpose other than your own is a violation of United States copyright laws.

Limits of Liability and Disclaimer of Warranty

The author and publisher of this book have used their best efforts in preparing the book and the programs contained in it. These efforts include the development, research, and testing of the theories and programs to determine their effectiveness. The author and publisher make no warranty of any kind, expressed or implied, with regard to these programs or the documentation contained in this book.

The author and publisher shall not be liable in the event of incidental or consequential damages in connection with, or arising out of, the furnishing, performance, or use of the programs, associated instructions, and/or claims of productivity gains.


Trademarked names appear throughout this book. Rather than list the names and entities that own the trademarks or insert a trademark symbol with each mention of the trademarked name, the publisher states that it is using the names for editorial purposes only and to the benefit of the trademark owner, with no intention of infringing upon that trademark.

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Phone: 602-485-3611

Paraglyph Press ISBN: 1-932111-74-3

Printed in the United States of America

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74 3FRT.p70 2/7/03, 1:09 PM

The Paraglyph Mission

This book you've purchased is a collaborative creation involving the work of many hands, from authors to editors to designers and to technical reviewers. At Paraglyph Press, we like to think that everything we create, develop, and publish is the result of one form creating another. And as this cycle continues on, we believe that your suggestions, ideas, feedback, and comments on how you've used our books is an important part of the process for us and our authors.

We've created Paraglyph Press with the sole mission of producing and publishing books that make a difference. The last thing we all need is yet another tech book on the same tired, old topic. So we ask our authors and all of the many creative hands who touch our publications to do a little extra, dig a little deeper, think a little harder, and create a better book. The founders of Paraglyph are dedicated to finding the best authors, developing the best books, and helping you find the solutions you need.

As you use this book,please take a moment to drop us a line at and let us know how we are doing - and how we can keep producing and publishing the kinds of books that you can't live without.


Keith Weiskamp & Jeff Duntemann
Paraglyph Press Founders

Paraglyph Press
4015 N. 78th Street #115
Scottsdale, Arizona 85251

email: Web: Phone: 602-485-3611

To the Eternal Memory of
Victoria A. Duntemann

Who pulled my life from the void,
Named the stars for me,
And always had a dollar
For one more pipe fitting!

About the Author

Jeff Duntemann's career as technology author/editor spans almost thirty years, since his first technical articles began appearing in 1974. After six years as programmer/analyst for Xerox Corporation, Jeff served as Technical Editor for Ziff-Davis'' PC Tech Journal, and founding editor of Borland International's Turbo Technix. He is the sole author of nine books on computer technology and has collaborated with others on almost twenty more. His book Assembly Language Step By Step has been in print continuously since 1989 and is probably the best-selling title on Intel assembly language ever. He wrote the 'Structured Programming' column at Dr. Dobb's Journal for four years. His books and magazine articles have won several awards from the Society for Technical Communication and the Arizona Book Publishing Association, including the STC's coveted Distinguished Technical Communication award, presented to him in 1993.

Jeff co-founded The Coriolis Group in 1989 with publishing entrepreneur Keith Weiskamp, and edited the firm's journal PC Techniques (later Visual Developer) throughout its ten-year life. Most recently, Jeff helped establish Paraglyph Press, at which he now holds the position of Editor at Large. He is an accomplished teacher and public speaker, and has given numerous presentations on the technology industry at conferences and conventions in the US, Canada, and the U.K.

At home, Jeff writes science fiction, tinkers with electronics, robotics, amateur radio (as K7JPD) and (of course) wireless networking. He lives with Carol, his wife of 27 years, in Colorado Springs, Colorado. Readers may contact him via email at, and are encouraged to see his Web site at For more information on Wi-Fi, see his site


Abundant thanks are due to many parties:

  • My informal review board: David Beers, Eric Brombaugh, Michael Covington, Bill Leininger, and Jim Mischel.

  • The guys on the NetStumbler forums, particularly Blackwave, Thorn, and Lincomatic. You didn't hear much from me because I was too busy hitting the 'Search' button.

  • Vendors Pacific Wireless, Linksys, and D-Link, for product photos. Note that no 'review products' were used in writing this book. I chose them for their merits and paid for them all.

  • Ben Sawyer, for abundant advice and sage manuscript critique.

  • The whole Paraglyph gang: Keith Weiskamp, Steve Sayre, Cynthia Caldwell,

  • Sharon Linsenbach, and Kim Eoff. The magic is back-let it always be so!

  • Carol, my spouse and best friend, for listening to me say, 'It's almost done!' for the last three months before it finally was.