® ® Te r r y C o l l i n g s & K u r t W a l l SEC OOLS IN Y T C E CD-R L H T O ED UD M UR ON IT Linux Solutions from the Experts at Red Hat ® ® P R E S S™ Red Hat® Linux® Networking and System Administration Red Hat® Linux® Networking and System Administration Terry Collings and Kurt Wall M&T Books An imprint of Hungry Minds, Inc Best-Selling Books ● Digital Downloads ● e-Books ● Answer Networks e-Newsletters ● Branded Web Sites ● e-Learning New York, NY ● Cleveland, OH ● Indianapolis, IN Red Hat® Linux® Networking and System Administration Published by Hungry Minds, Inc 909 Third Avenue New York, NY 10022 www.hungryminds.com Copyright © 2002 Hungry Minds, Inc All rights reserved No part of this book, including interior design, cover design, and icons, may be reproduced or transmitted in any form, by any means (electronic, photocopying, recording, or otherwise) without the prior written permission of the publisher Library of Congress Control Number: 2001093591 ISBN: 0-7645-3632-X 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OR WARRANTED TO PRODUCE ANY PARTICULAR RESULTS, AND THE ADVICE AND STRATEGIES CONTAINED HEREIN MAY NOT BE SUITABLE FOR EVERY INDIVIDUAL NEITHER THE PUBLISHER NOR AUTHOR SHALL BE LIABLE FOR ANY LOSS OF PROFIT OR ANY OTHER COMMERCIAL DAMAGES, INCLUDING BUT NOT LIMITED TO SPECIAL, INCIDENTAL, CONSEQUENTIAL, OR OTHER DAMAGES Trademarks: Hungry Minds and the Hungry Minds logo are trademarks or registered trademarks of Hungry Minds Red Hat, Red Hat Press, and the Red Hat Press logo are trademarks or registered trademarks of Red Hat, Inc Linux is a trademark or registered trademark of Linus Torvalds All other trademarks are property of their respective owners Hungry Minds, Inc., is not associated with any product or vendor mentioned in this book is a trademark of Hungry Minds, Inc is a trademark of Hungry Minds, Inc About the Authors Terry Collings has been working in the computer field since 1981 and has experience in all types of operating systems and their associated hardware He has industry certifications in Novell, TCP/IP, MS Windows, and Unix Terry’s full-time job is at Muhlenberg College in Allentown, PA, where he is the school’s Instructional Technologist His main function in this position is assisting faculty in the use of computer technology to augment their classroom presentations He is also the system administrator for the school’s online course content management software Terry also teaches a wide range of computer and technology-related courses in the evenings at Allentown Business School Terry has been a technical editor for several Hungry Minds, Inc., books and is the co-author of the Linux Bible He can be reached at collings@muhlenberg.edu Kurt Wall first touched a computer in 1980 when he learned FORTRAN on an IBM mainframe of forgotten vintage; things have only gotten better since then These days, Kurt is a full-time Linux and Unix author, editor, consultant, and programmer He has written five books about Linux and Unix programming and system administration, is working on his sixth, and is the technical editor for over a dozen other Linux- and Unix-related titles Currently, Kurt works from his home in Indianapolis He can be reached via e-mail at kwall@kurtwerks.com Credits CONTRIBUTING WRITERS Viktorie Navratilova Dennis Powell Brandon Wiley ACQUISITIONS EDITOR Terri Varveris PROJECT EDITOR Martin V Minner TECHNICAL EDITORS Joel Lee Matt Hayden Sandra Moore COPY EDITOR Marti Paul RED HAT PRESS LIAISON Lorien Golaski, Red Hat Communications Manager PROJECT COORDINATOR Dale White GRAPHICS AND PRODUCTION SPECIALISTS Beth Brooks Sean Decker Melanie DesJardins Jeremey Unger QUALITY CONTROL TECHNICIANS Laura Albert Luisa Perez Carl Pierce Marianne Santy SENIOR PERMISSIONS EDITOR Carmen Krikorian MEDIA DEVELOPMENT SPECIALIST Greg Stephens MEDIA DEVELOPMENT COORDINATOR Marisa Pearman COVER DESIGN Michael Freeland COVER PHOTO Hulton Getty PROOFREADING AND INDEXING TECHBOOKS Production Services This book is dedicated to the victims and heroes of September 11, 2001 Preface Red Hat Linux is the most popular distribution of Linux currently in use Red Hat Linux has shown itself to be a robust, reliable operating system that can run on a variety of hardware, from personal computers to large mainframes Linux in general, and Red Hat Linux in particular, is a very powerful operating system that can be used at the enterprise level as a full-fledged server, as well as at the workstation level for typical user applications For those of us dissatisfied with the reliability of other commercially available operating systems, Red Hat Linux is a pleasant alternative How This Book Is Organized This book is divided into five parts Each part covers a specific area of functionality in a typical Red Hat Linux system Part I — Red Hat Linux System and Network Administration Defined This part describes the duties of a system administrator Chapter explains some of the more common tasks, such as installing servers and application software, managing user accounts, and backing up and restoring files Many more topics are covered in this chapter Chapter details the steps involved in planning and building a network and planning for security and disaster recovery Chapter takes you through the steps required to install Red Hat Linux on a local system as well as on a remote system Chapter gives an explanation of the Red Hat Linux file system and storage devices Chapter 5, the last chapter in Part I, lists the system and network configuration files and their uses Part II — Red Hat Linux Network Services This part of the book is where you learn about the networking services available in Red Hat Linux Chapter gives an explanation of the TCP/IP protocol suite and how to configure it on your system Chapter tells how to configure the Network File System (NFS) for sharing files with other Linux or Unix computers on your network Chapter provides a description of the Network Information System (NIS) as well as configuration instructions If you have computers running Microsoft operating systems, Chapter is where you find instructions for connecting your Red Hat Linux network to the Windows network The final chapter in this part, Chapter 10, tells you how to connect your Red Hat Linux network to computers running the Apple operating system ix Hungry Minds, Inc End-User License Agreement READ THIS You should carefully read these terms and conditions before opening the software packet(s) included with this book (“Book”) This is a license agreement (“Agreement”) between you and Hungry Minds, Inc (“HMI”) By opening the accompanying software packet(s), you acknowledge that you have read and accept the following terms and conditions If you not agree and not want to be bound by such terms and conditions, promptly return the Book and the unopened software packet(s) to the place you obtained them for a full refund License Grant HMI grants to you (either an individual or entity) a nonexclusive license to use one copy 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