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01_747548 ffirs.qxd 8/12/05 8:48 PM Page iii PC Magazine® Home Networking Solutions Les Freed 01_747548 ffirs.qxd 8/12/05 8:48 PM Page i PC Magazine® Home Networking Solutions 01_747548 ffirs.qxd 8/12/05 8:48 PM Page iv PC Magazine®Home Networking Solutions Published by Wiley Publishing, Inc. 10475 Crosspoint Boulevard Indianapolis, IN 46256 www.wiley.com Copyright © 2005 by Wiley Publishing, Inc., Indianapolis, Indiana Published by Wiley Publishing, Inc., Indianapolis, Indiana Published simultaneously in Canada ISBN-13: 978-0-471-74754-3 ISBN-10: 0-471-74754-8 Manufactured in the United States of America 10 9 8 7 6 5 4 3 2 1 1MA/TR/QY/QV/IN 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 permission 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. Requests to the Publisher for permission should be addressed to the Legal Department, Wiley Publishing, Inc., 10475 Crosspoint Blvd., Indianapolis, IN 46256, (317) 572-3447, fax (317) 572-4355, or online at http://www.wiley.com/go/permissions. Limit of Liability/Disclaimer of Warranty:The publisher and the author make no representations or warranties with respect to the accuracy or completeness of the contents of this work and specifically disclaim all warranties, including without limitation warranties of fitness for a particular purpose. No warranty may be created or extended by sales or promotional materials. The advice and strategies contained herein may not be suitable for every situation. This work is sold with the understanding that the publisher is not engaged in rendering legal, accounting, or other professional services. If professional assistance is required, the services of a competent professional person should be sought. Neither the publisher nor the author shall be liable for damages arising herefrom. The fact that an organization or Website is referred to in this work as a citation and/or a potential source of further information does not mean that the author or the publisher endorses the information the organization or Website may provide or recommendations it may make. Further, readers should be aware that Internet Websites listed in this work may have changed or disappeared between when this work was written and when it is read. For general information on our other products and services or to obtain technical support, please contact our Customer Care Department within the U.S. at (800) 762-2974, outside the U.S. at (317) 572-3993 or fax (317) 572-4002. Wiley also publishes its books in a variety of electronic formats. Some content that appears in print may not be available in electronic books. Library of Congress Cataloging-in-Publication Data Freed, Les. PC magazine home networking solutions / Les Freed. p. cm. Includes index. ISBN-13: 978-0-471-74754-3 (paper/website) ISBN-10: 0-471-74754-8 (paper/website) 1. Home computer networks. I. Title: Home networking solutions. II. PC magazine (New York, N.Y.) III. Title. TK5105.75.F744 2005 004.6’8—dc22 2005021554 Trademarks:Wiley and the Wiley logo are trademarks or registered trademarks of John Wiley & Sons, Inc. and/or its affiliates, in the United States and other countries, and may not be used without written permission. PC Magazine and the PC Magazine logo are registered trademarks of Ziff Davis Publishing Holdings, Inc. Used under license. All rights reserved. All other trademarks are the property of their respective owners. Wiley Publishing, Inc., is not associated with any product or vendor mentioned in this book. 01_747548 ffirs.qxd 8/12/05 8:48 PM Page v About the Author Les Freed has been a contributing editor at PC Magazine since 1994 and a frequent contributor since 1990. Before joining PC Magazine, Les was founder and CEO of Crosstalk Communications, developers of the popular Crosstalk data communications program for PCs—back in the days before the Internet made communications software obsolete. Prior to founding Crosstalk, Les was a Senior Technician and Videotape Editor at CBS News from 1976 to 1981 and a Cameraman and News Editor at WTVJ-TV in Miami from 1972 to 1976. He graduated from the University of Miami in 1974 with B.A. in Electronic Journalism. Les is the author or co-author of 14 books on networking, computing, and digital photography. Les and long-time collaborator Frank Derfler shared the 1993 Computer Press Association award for Best How-To Book for their book How Networks Work, still in print in its 6th edition. 01_747548 ffirs.qxd 8/12/05 8:48 PM Page vi Credits EXECUTIVE EDITOR PROJECT COORDINATOR Chris Webb Erin Smith DEVELOPMENT EDITOR GRAPHICS AND PRODUCTION SPECIALISTS Tom Dinse Sean Decker Lauren Goddard TECHNICAL EDITOR JenniferHeleine Barry Press Melanee Prendergast PRODUCTION EDITOR QUALITY CONTROL TECHNICIANS Pamela Hanley Leeann Harney Jessica Kramer COPY EDITOR Joe Niesen Susan Hobbs Dwight Ramsey EDITORIAL MANAGER PROOFREADING AND INDEXING Mary Beth Wakefield TECHBOOKS Production Services PRODUCTION MANAGER Tim Tate VICE PRESIDENT & EXECUTIVE GROUP PUBLISHER Richard Swadley VICE PRESIDENT AND PUBLISHER Joseph B. Wikert 02_747548 ftoc.qxd 8/12/05 8:46 PM Page vii Contents at a Glance Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . . xvii Part I Why You Need a Network Chapter 1 What Is a LAN? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Chapter 2 What Can You Do with a Network? . . . . . . . . . . . . . 11 Chapter 3 A Networking Crash Course . . . . . . . . . . . . . . . . . . . 31 Part II Designing Your LAN Chapter 4 Designing Your Network . . . . . . . . . . . . . . . . . . . . . . 51 Chapter 5 Getting the Right Stuff . . . . . . . . . . . . . . . . . . . . . . . 71 Part III Installing Your LAN Chapter 6 Installing an Ethernet LAN . . . . . . . . . . . . . . . . . . . . 95 Chapter 7 Installing a Wireless LAN . . . . . . . . . . . . . . . . . . . . 111 Chapter 8 Configuring Your Network . . . . . . . . . . . . . . . . . . . 133 Part IV Using Your LAN Chapter 9 Sharing Internet Access . . . . . . . . . . . . . . . . . . . . . 151 Chapter 10 Sharing Files on Your LAN . . . . . . . . . . . . . . . . . . . 171 Chapter 11 Sharing Printers . . . . . . . . . . . . . . . . . . . . . . . . . . . 187 Chapter 12 Home Media and Convergence . . . . . . . . . . . . . . . . 211 Chapter 13 Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247 Chapter 14 Advanced Networking Topics . . . . . . . . . . . . . . . . . 263 Appendix A: Home Networking Cookbook . . . . . . . 283 Appendix B: Troubleshooting Your LAN . . . . . . . . . 327 Appendix C: Online Resources . . . . . . . . . . . . . . . . 343 Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 351 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 359 02_747548 ftoc.qxd 8/12/05 8:47 PM Page ix Contents Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . . xvii Part I Why You Need a Network Chapter 1 What Is a LAN?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 It’s Simpler Than You Might Think . . . . . . . . . . . . . . . . . . . . . . 3 A Guided Tour of Les’s LAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Chapter 2 What Can You Do with a Network? . . . . . . . . . . . . . . . . 11 Sharing Your Internet Connection . . . . . . . . . . . . . . . . . . . . . . 11 Multiple IP Addresses (Ethernet Switch) . . . . . . . . . . . . . . . . . . . . . . 12 Using Windows XP’s Internet Connection Sharing (Proxy Server) . . . 12 Using a Router/Firewall (Router) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Sharing Files and Printers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 File Sharing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Printer Sharing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Enjoying Multimedia Convergence . . . . . . . . . . . . . . . . . . . . . 23 Using Digital Media on a Home Network . . . . . . . . . . . . . . . . . . . . . 24 Home Media Hubs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 TiVo Series2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Microsoft Media Center PC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Playing Head-to-Head Games . . . . . . . . . . . . . . . . . . . . . . . . . 29 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Chapter 3 A Networking Crash Course . . . . . . . . . . . . . . . . . . . . . . 31 Network Connection Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Internet Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 IP Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Understanding Client-Server and Peer Networks . . . . . . . . . . . 40 Client-Server Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Peer-to-Peer Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 02_747548 ftoc.qxd 8/12/05 8:47 PM Page x x Contents Part II Designing Your LAN Chapter 4 Designing Your Network. . . . . . . . . . . . . . . . . . . . . . . . . . 51 Wired, Wireless, or Both? . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 Is Wireless Best for You? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Should You Stick With a Wired Network? . . . . . . . . . . . . . . . . . . . . . 53 “No new wires” Alternatives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Evaluating Your Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Ethernet Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 Wireless Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Sorting Through the Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Wireless Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 Wireless Coverage Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 Wireless Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 HomePlug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 Chapter 5 Getting the Right Stuff . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 Choosing a Network Adapter . . . . . . . . . . . . . . . . . . . . . . . . . 71 Desktop Ethernet Adapters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 Desktop Wireless Adapters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 Laptop Ethernet Adapters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 Laptop Wireless Adapters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 Choosing an Ethernet Switch . . . . . . . . . . . . . . . . . . . . . . . . . 82 Choosing a Wireless Access Point . . . . . . . . . . . . . . . . . . . . . . 83 Why Use a Standalone Access Point? . . . . . . . . . . . . . . . . . . . . . . . . . 84 Wireless LAN Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 Choosing a Router/Firewall . . . . . . . . . . . . . . . . . . . . . . . . . . . 88 How Routers Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88 All-in-One Routers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 Choosing a Print Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 Part III Installing Your LAN Chapter 6 Installing an Ethernet LAN. . . . . . . . . . . . . . . . . . . . . . . . 95 Installing Ethernet Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95 Planning Your Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 Cable System Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 Installing Your Network Hardware . . . . . . . . . . . . . . . . . . . . 104 Installing an Ethernet Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105 Installing Network Adapters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109 02_747548 ftoc.qxd 8/12/05 8:47 PM Page xi Contents xi Chapter 7 Installing a Wireless LAN. . . . . . . . . . . . . . . . . . . . . . . . 111 Before You Install . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111 Installing Wireless Adapters . . . . . . . . . . . . . . . . . . . . . . . . . . 112 PCI Wireless Adapters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113 CardBus, PC Card, and USB Wireless Adapters . . . . . . . . . . . . . . . . 116 Configuring Your Wireless Adapter . . . . . . . . . . . . . . . . . . . . . . . . . 117 Installing Your Access Point . . . . . . . . . . . . . . . . . . . . . . . . . . 120 Surveying Your Wireless LAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121 Connecting and Configuring the Access Point . . . . . . . . . . . . . . . . . 123 Securing Your Wireless LAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132 Chapter 8 Configuring Your Network . . . . . . . . . . . . . . . . . . . . . . . 133 How Windows Networking Works . . . . . . . . . . . . . . . . . . . . 133 Configuring Your Network . . . . . . . . . . . . . . . . . . . . . . . . . . 135 How OS X Networking Works . . . . . . . . . . . . . . . . . . . . . . . . 142 Sharing Files and Printers with Other Macs . . . . . . . . . . . . . . . . . . . 142 Sharing Files and Printers with PCs . . . . . . . . . . . . . . . . . . . . . . . . . 143 Windows IP Addressing Basics . . . . . . . . . . . . . . . . . . . . . . . 143 Automatic IP Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144 Alternate IP Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147 Part IV Using Your LAN Chapter 9 Sharing Internet Access. . . . . . . . . . . . . . . . . . . . . . . . . . 151 How IP Addressing Works . . . . . . . . . . . . . . . . . . . . . . . . . . . 152 Configuring Your Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154 Checking Your PC’s IP Configuration . . . . . . . . . . . . . . . . . . . . . . . . 155 Configuring Your Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158 Configuring a Linksys Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159 Configuring a D-Link Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162 What’s Next? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169 Chapter 10 Sharing Files on Your LAN. . . . . . . . . . . . . . . . . . . . . . . 171 How File Sharing Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171 Windows File Sharing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172 Sharing a Folder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173 Sharing a Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175 Accessing Shared Drives and Folders . . . . . . . . . . . . . . . . . . . 177 Controlling Automatic Discovery . . . . . . . . . . . . . . . . . . . . . . . . . . . 178 Mapping a Network Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180 Mac OS X File Sharing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185

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