Linux Networking and System Admin

889 Pages·2002·7.82 MB·English

Your Official Red Hat® Linux® Guide to Networking and System Administration
®
®
R
eviewed by the experts at Red Hat, this in-depth guide delivers all
®
the know-how you need to set up and manage a state-of-the-art Linux
network. ®
P R E S S™
Red Hat Linux experts Terry Collings and Kurt Wall start with the
basics—network planning and Red Hat installation and configuration. Terry Collings & Kurt Wall
aR
They then show you in detail how to set up network and Internet services,
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from establishing a network file system to configuring mail services. Eight e
chapters give you the lowdown on customizing the kernel, automating dd
tasks with scripting, performing backups, and more—the nuts-and-bolts

maintenance information you need to keep your system running smoothly. SH
And last but not least, the authors provide nearly 100 pages of proven y
CD-ROM INCLUDES
strategies and tips for maintaining system security. sa
Complete with utilities and code on CD-ROM, this official Red Hat Linux networking and tt
Linux guide is the one resource you need for a secure, high-performance e ®
administration tools, L
Linux network. m
including Ethereal,
i
logcheck, NET-SNMP, n
Proven Red Hat Linux Networking and Administration Solutions
Nmap, Portsentry, A
(cid:1) Plan your network, install Red Hat Linux, and get a handle on the file u
Tripwire and SAINT
system and configuration files dx
trial version

(cid:1)Configure TCP/IP networking, the Network File System, and the Net- m ®
work Information System N
Code, scripts, and ex-
(cid:1) Set up print services and connections to Windows and Macintosh clients
amples from the book i
e
(cid:1)Monitor performance, administer users and groups, back up and restore n
the file system, and install or upgrade software packages t
Plus a searchable i
w
(cid:1) Design a security plan, implement local security, set up firewalls and s
e-version of the book
proxy servers, and combat system intrusions to
(cid:1) Troubleshoot file system, networking, printing, and e-mail problems r
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Reader Level a
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TERRY COLLINGS is the Instructional Technologist at Muhlenberg College in Intermediate to t
Advanced ii
Pennsylvania, where he is responsible for developing smart classroom
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technologies. He is also the coauthor of the Linux Bible. Shelving Category
Networking ng T Y T OOLSIN
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Crash Course and Linux Programming by Example. $89.99 Canada EC O OMDE
£44.99 UK incl.VAT S D
Reviewed by the Experts at Red Hat
SECURITY TOOLS Linux Solutions from the Experts at Red Hat
www.redhat.com
INCLUDED ON CD-ROM
ISBN 0-7645-3632-X www.hungryminds.com
55999
Collings
Cover design by
®
Michael J. Freeland & Wall P R E S S™
®
9 780764 536328 7 85555 09538 0 Cover photo © Hulton Getty
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Red Hat® Linux® Networking
and System Administration
a3632-X FM.F 2/21/02 8:33 AM Page ii
a3632-X FM.F 2/21/02 8:33 AM Page iii
Red Hat® Linux®
Networking and
System
Administration
Terry Collings and Kurt Wall
M&T Books
An imprint of Hungry Minds, Inc.
Best-Selling Books (cid:2)Digital Downloads (cid:2)e-Books (cid:2)Answer Networks
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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
Printed in the United States of America
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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.
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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 [email protected].
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 [email protected].
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Credits
CONTRIBUTING WRITERS QUALITY CONTROL TECHNICIANS
Viktorie Navratilova Laura Albert
Dennis Powell Luisa Perez
Brandon Wiley Carl Pierce
Marianne Santy
ACQUISITIONS EDITOR
Terri Varveris SENIOR PERMISSIONS EDITOR
Carmen Krikorian
PROJECT EDITOR
Martin V. Minner MEDIA DEVELOPMENT SPECIALIST
Greg Stephens
TECHNICAL EDITORS
Joel Lee MEDIA DEVELOPMENT COORDINATOR
Matt Hayden Marisa Pearman
Sandra Moore
COVER DESIGN
COPY EDITOR Michael Freeland
Marti Paul
COVER PHOTO
RED HAT PRESS LIAISON Hulton Getty
Lorien Golaski, Red Hat
Communications Manager PROOFREADING AND INDEXING
TECHBOOKS Production Services
PROJECT COORDINATOR
Dale White
GRAPHICS AND PRODUCTION
SPECIALISTS
Beth Brooks
Sean Decker
Melanie DesJardins
Jeremey Unger
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This book is dedicated to the victims and heroes of September 11, 2001.
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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 com-
mercially 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 1 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 2 details the steps involved in planning and build-
ing a network and planning for security and disaster recovery. Chapter 3 takes you
through the steps required to install Red Hat Linux on a local system as well as on
a remote system. Chapter 4 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 6 gives an explanation of the TCP/IP protocol suite and
how to configure it on your system. Chapter 7 tells how to configure the Network
File System (NFS) for sharing files with other Linux or Unix computers on your
network. Chapter 8 provides a description of the Network Information System (NIS)
as well as configuration instructions. If you have computers running Microsoft
operating systems, Chapter 9 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.
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