Copyright

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Library of Congress Cataloging-in-Publication Data

Pipkin, Donald L.

Halting the hacker : a practical guide to computer security / Donald L. Pipkin.--2nd ed.

p. cm. -- (Hewlett-Packard professional books)

Includes index.

1. Computer security. 2. UNIX (Computer file) I. Title. II. Series.

QA76.9.A25 P56 2002

005.8--dc21 2002029250

Editorial/production supervision: Patti Guerrieri

Composition: Donald L. Pipkin

Cover design director: Jerry Votta

Cover design: Nina Scuderi

Manufacturing buyer: Maura Zaldivar

Acquisitions editor: Jill Harry

Editorial assistant: Kate Wolf

Marketing manager: Dan DePasquale

Publisher, Hewlett-Packard Books: Patricia Pekary

2003, 1997 by Hewlett-Packard Company

Published by Pearson Education

Publishing as Prentice Hall PTR

Upper Saddle River, New Jersey 07458

Prentice Hall books are widely used by corporations and government agencies for training, marketing, and resale. For information regarding corporate and government bulk discounts , please contact: Corporate and Government Sales [phone] or [e-mail].

All product or company names mentioned herein are the trademarks or registered trademarks of their respective owners .

All rights reserved. No part of this book may be reproduced, in any form or by any means, without permission in writing from the publisher.

Printed in the United States of America

10 9 8 7 6 5 4 3 2 1

Pearson Education LTD.

Pearson Education Australia PTY, Limited

Pearson Education Singapore, Pte. Ltd.

Pearson Education North Asia Ltd.

Pearson Education Canada, Ltd.

Pearson Educaci ³n de Mexico, S.A. de C.V.

Pearson Education ” Japan

Pearson Education Malaysia, Pte. Ltd.

Dedication

For my children.

May your love of learning last a lifetime.

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