00_575252 ffirs.qxd 9/2/04 3:49 PM Page i Wireless Networks FOR DUMmIES‰ by Barry Lewis and Peter T.Davis 00_575252 ffirs.qxd 9/2/04 3:49 PM Page iv 00_575252 ffirs.qxd 9/2/04 3:49 PM Page i Wireless Networks FOR DUMmIES‰ by Barry Lewis and Peter T.Davis 00_575252 ffirs.qxd 9/2/04 3:49 PM Page ii Wireless Networks For Dummies® Published by Wiley Publishing, Inc. 111 River Street Hoboken, NJ 07030-5774 www.wiley.com Copyright © 2004 by Wiley Publishing, Inc., Indianapolis, Indiana Published by Wiley Publishing, Inc., Indianapolis, Indiana Published simultaneously in Canada No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, scanning or otherwise, except as permitted under Sections 107 or 108 of the 1976 United States Copyright Act, without either the prior written permis- sion of the Publisher, or authorization through payment of the appropriate per-copy fee to the Copyright Clearance Center, 222 Rosewood Drive, Danvers, MA 01923, (978) 750-8400, fax (978) 646-8600. 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Library of Congress Control Number: 2004107896 ISBN: 0-7645-7525-2 Manufactured in the United States of America 10 9 8 7 6 5 4 3 2 1 1O/SS/QZ/QU/IN 00_575252 ffirs.qxd 9/2/04 3:49 PM Page iii About the Author Barry D. Lewis (CISSP, CISM) has been in the information technology sector for 35 years, specializing in information security since 1980. He co-founded Cerberus Information Security Consulting in 1993 and was elevated to President of the firm shortly thereafter. He served as Secretary and then Vice President of the ISC(2) organization, past-President of the Toronto ISSA, and Chairperson of the Eastern Canada ACF2 Users Group. Barry is listed in the International Who’s Who of Entrepreneurs. Mr. Lewis lectures worldwide on computer security and audit issues and was honored with the Best Speaker Award at the annual Computer Associates Enterprise Wide Security & Audit conference (ESAC), one of North America’s largest security conferences. Mr. Lewis has written and co-authored numerous articles and seven books, including Computer Security For Dummies, and Teach Yourself Windows 2000 Server in 21 Days. He lives near Toronto with his wife Elizabeth and son Derek. Peter T. Davis (CISA, CMA, CISSP, CWNA, CCNA, CMC, CISM) founded Peter Davis+Associates (a very original name) as a firm specializing in the security, audit, and control of information. A 29-year information systems veteran, Mr. Davis’s career includes positions as programmer, systems ana- lyst, security administrator, security planner, information systems auditor, and consultant. Peter also is the past President and founder of the Toronto ISSA chapter, past Recording Secretary of the ISSA’s International Board, and past Computer Security Institute Advisory Committee member. Mr. Davis has written or co-written numerous articles and 10 books, including Computer Security For Dummies and Securing and Controlling Cisco Routers. Peter was also the technical editor for Hacking For Dummies and Norton Internet Security For Dummies. Peter is listed in the International Who’s Who of Professionals. In addition, he was only the third Editor in the three-decade history of EDPACS, a security, audit and control publication. He finds time to be a part-time lec- turer in data communications at Seneca College (cs.senecac.on.ca). He lives with his wife Janet, daughter Kelly, two cats, and a dog in Toronto, Ontario. 00_575252 ffirs.qxd 9/2/04 3:49 PM Page iv 00_575252 ffirs.qxd 9/2/04 3:49 PM Page v Dedication To my wife Elizabeth, who puts up with far more than I have a right to expect. — Barry To all my friends and enemies. Hopefully, the first group is bigger than the second. — Peter 00_575252 ffirs.qxd 9/2/04 3:49 PM Page vi 00_575252 ffirs.qxd 9/2/04 3:49 PM Page vii Author’s Acknowledgments We’d like to offer special thanks to Pat O’Brien, who started this rolling. Peter worked as the technical editor for Pat on Hacking For Dummies. Thanks for passing on Melody’s name. Thanks to Melody Layne, acquisitions editor, for pitching the book to the edi- torial committee and getting us a contract. Much appreciated. Thanks to Becky Huehls, who started us out on this project as editor but wisely got herself re-assigned. Thanks to Kelly Ewing for picking up the ball and running with it after Becky. Unfortunately, Kelly fumbled it, but Colleen Totz was able to struggle with it over the goal line. Dan DiNicolo, technical editor, is commended for his diligence in reviewing the material. Thanks, Dan. Peter would like to thank Kevin Beaver, Ken Cutler, Gerry Grindler, Ronnie Holland, Carl Jackson, Ray Kaplan, Kevin Kobelsky, Carrie Liddie, Dexter Mills Jr., and Larry Simon for responding to a request for wireless informa- tion. Thanks for answering the call for help. The provided information shows in this book. Barry would like to thank his co-author Peter. Always a pleasure, sir. He would also like to acknowledge Craig McGuffin and John Tannahill who are always there for him, as friends and business associates , and never fail to lend a helping hand. 00_575252 ffirs.qxd 9/2/04 3:49 PM Page viii Publisher’s Acknowledgments We’re proud of this book; please send us your comments through our online registration form located at www.dummies.com/register. Some of the people who helped bring this book to market include the following: Acquisitions, Editorial, and Production Media Development Project Coordinators: Courtney MacIntyre, Project Editor: Colleen Totz, Rebecca Huehls Erin Smith Acquisitions Editor: Melody Layne Layout and Graphics: Jonelle Burns, Technical Editor: Dan DiNicolo Lauren Goddard, Denny Hager, Joyce Haughey, Stephanie D. Jumper, Editorial Manager: Carol Sheehan Michael Kruzil, Lynsey Osborn, Media Development Manager: Jacque Roth, Heather Ryan, Laura VanWinkle Ron Terry Media Development Supervisor: Proofreaders: John Greenough, Carl W. Pierce, Richard Graves Brian H. Walls Editorial Assistant: Amanda Foxworth Indexer: TECHBOOKS Production Services Cartoons: Rich Tennant, www.the5thwave.com Special Help: Kelly Ewing Publishing and Editorial for Technology Dummies Richard Swadley, Vice President and Executive Group Publisher Andy Cummings, Vice President and Publisher Mary Bednarek, Executive Acquisitions Director Mary C. Corder, Editorial Director Publishing for Consumer Dummies Diane Graves Steele, Vice President and Publisher Joyce Pepple, Acquisitions Director Composition Services Gerry Fahey, Vice President of Production Services Debbie Stailey, Director of Composition Services 01_575252 ftoc.qxd 9/2/04 3:50 PM Page ix Contents at a Glance Introduction .................................................................1 Part I: Planning and Acquiring Your Network ................7 Chapter 1: Removing the Tethers: Entering the Wireless World .................................9 Chapter 2: If You Fail to Plan, You Plan to Fail .............................................................25 Chapter 3: Matching Wireless Technologies to Your Plan .........................................47 Part II: Implementing Your Wireless Network ..............59 Chapter 4: Getting a Quick Start