Sniffer Network Optimization and Troubleshooting Handbook Copyright © 2002 by Syngress Publishing, Inc.All Rights Reserved
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219_sniffer_FM.qxd 6/28/02 2:28 PM Page i [email protected] With more than 1,500,000 copies of our MCSE, MCSD, CompTIA, and Cisco study guides in print, we continue to look for ways we can better serve the information needs of our readers. One way we do that is by listening. Readers like yourself have been telling us they want an Internet-based ser- vice that would extend and enhance the value of our books. Based on reader feedback and our own strategic plan, we have created a Web site that we hope will exceed your expectations. [email protected] is an interactive treasure trove of useful infor- mation focusing on our book topics and related technologies. The site offers the following features: ■ One-year warranty against content obsolescence due to vendor product upgrades. 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We’re listening. www.syngress.com/solutions 219_sniffer_FM.qxd 6/28/02 2:28 PM Page ii 219_sniffer_FM.qxd 6/28/02 2:28 PM Page iii 1 YEAR UPGRADE BUYER PROTECTION PLAN Sniffer Pro Network Optimization & Troubleshooting Handbook Robert J. Shimonski Wally Eaton Umer Khan Yuri Gordienko 219_sniffer_FM.qxd 6/28/02 2:28 PM Page iv Syngress Publishing, Inc., the author(s), and any person or firm involved in the writing, editing, or production (collectively “Makers”) of this book (“the Work”) do not guarantee or warrant the results to be obtained from the Work. There is no guarantee of any kind, expressed or implied, regarding the Work or its contents.The Work is sold AS IS and WITHOUT WARRANTY.You may have other legal rights, which vary from state to state. In no event will Makers be liable to you for damages, including any loss of profits, lost savings, or other incidental or consequential damages arising out from the Work or its contents. Because some states do not allow the exclusion or limitation of liability for consequential or incidental damages, the above limitation may not apply to you. You should always use reasonable care, including backup and other appropriate precautions, when working with computers, networks, data, and files. Syngress Media®, Syngress®,“Career Advancement Through Skill Enhancement®,” and “Ask the Author UPDATE®,” are registered trademarks of Syngress Publishing, Inc. “Mission Critical™,”“Hack Proofing®,” and “The Only Way to Stop a Hacker is to Think Like One™” are trademarks of Syngress Publishing, Inc. Brands and product names mentioned in this book are trademarks or service marks of their respective companies. KEY SERIAL NUMBER 001 4KT53GR4T9 002 VDKPR2MPE4 003 N5SN5MEU63 004 Z3PU7GD34B 005 VHN7UFMY6N 006 EM4GF34RN8 007 R4ATBGBV3T 008 56RHPBQR56 009 EB4B33N5AS 010 AJ25FCT6YH PUBLISHED BY Syngress Publishing, Inc. 800 Hingham Street Rockland, MA 02370 Sniffer Network Optimization and Troubleshooting Handbook Copyright © 2002 by Syngress Publishing, Inc.All rights reserved. Printed in the United States of America. Except as permitted under the Copyright Act of 1976, no part of this publication may be reproduced or distributed in any form or by any means, or stored in a database or retrieval system, without the prior written permission of the publisher, with the exception that the program listings may be entered, stored, and executed in a computer system, but they may not be reproduced for publication. Printed in the United States of America 1 2 3 4 5 6 7 8 9 0 ISBN: 1-931836-57-4 Technical Editors: Robert J. Shimonski and Umer Khan Cover Designer: Michael Kavish Technical Reviewer: Randy Cook Page Layout and Art by: Shannon Tozier Acquisitions Editor: Catherine B. Nolan Copy Editor: Darlene Bordwell Developmental Editor: Jonathan Babcock Indexer: Rich Carlson Distributed by Publishers Group West in the United States and Jaguar Book Group in Canada. 219_sniffer_FM.qxd 6/28/02 2:28 PM Page v Acknowledgments We would like to acknowledge the following people for their kindness and support in making this book possible. Ralph Troupe, Rhonda St. John, Emlyn Rhodes, and the team at Callisma for their invaluable insight into the challenges of designing, deploying and supporting world- class enterprise networks. Karen Cross, Lance Tilford, Meaghan Cunningham, Kim Wylie, Harry Kirchner, Kevin Votel, Kent Anderson, Frida Yara, Jon Mayes, John Mesjak, Peg O’Donnell, Sandra Patterson, Betty Redmond, Roy Remer, Ron Shapiro, Patricia Kelly,Andrea Tetrick, Jennifer Pascal, Doug Reil, David Dahl, Janis Carpenter, and Susan Fryer of Publishers Group West for sharing their incredible marketing experience and expertise. Jacquie Shanahan,AnnHelen Lindeholm, David Burton, Febea Marinetti, and Rosie Moss of Elsevier Science for making certain that our vision remains worldwide in scope. David Buckland, Daniel Loh,Wendi Wong, Marie Chieng, Lucy Chong, Leslie Lim, Audrey Gan, and Joseph Chan of Transquest Publishers for the enthusiasm with which they receive our books. Kwon Sung June at Acorn Publishing for his support. Jackie Gross, Gayle Voycey,Alexia Penny,Anik Robitaille, Craig Siddall, Darlene Morrow, Iolanda Miller, Jane Mackay, and Marie Skelly at Jackie Gross & Associates for all their help and enthusiasm representing our product in Canada. Lois Fraser, Connie McMenemy, Shannon Russell, and the rest of the great folks at Jaguar Book Group for their help with distribution of Syngress books in Canada. A special welcome to the folks at Woodslane in Australia! Thank you to David Scott and everyone there as we start selling Syngress titles through Woodslane in Australia, New Zealand, Papua New Guinea, Fiji Tonga,Solomon Islands, and the Cook Islands. v 219_sniffer_FM.qxd 6/28/02 2:28 PM Page vi 219_sniffer_FM.qxd 6/28/02 2:28 PM Page vii Contributors Wally Eaton (CNX, BSCS, CCNP,CCDP,MCSE, MCP+I, NET- WORK+, FCC) is Chief Security Officer for the city of Jacksonville, FL. Previously,Wally held the position of Senior Systems Field Engineer for the Unisys Corporation, retiring after 20 years.At Unisys his duties included installing, debugging, and maintaining hardware and system soft- ware for Unisys mainframe computers. He is currently enrolled in the graduate program of Capitol College of Maryland, pursuing a master’s of Science in Network Security. Yuri Gordienko (CCNP,CCNA, CCDA, MCSE) is a Backbone Engineer with AT&T Canada, one of the largest Canadian ISPs. He is responsible for engineering and support of the national backbone. His specialties include Cisco routers and switches; network architecture and optimization; design and rollout of Internet Data Centers (IDC) in Montreal,Toronto, and Vancouver; and deployment of AT&T Canada route servers.Yuri is also a part-time instructor at RCC College,Toronto, teaching a computer communications course. He has contributed to sev- eral Syngress certification books, including Cisco Certified Design Associate Study Guide and Cisco Certified Network Associate Study Guide, Second Edition. Yuri holds a degree in Computation Physics. Eric Ouellet (CISSP) is a Senior Partner with Secure Systems Design Group, a network design and security consultancy based in Ottawa, Ontario, Canada. He specializes in the implementation of networks and security infrastructures from both a design and a hands-on perspective. Over his career he has been responsible for designing, installing, and trou- bleshooting WANs using Cisco, Nortel, and Alcatel equipment, configured to support voice, data and video conferencing services over terrestrial, satellite relay, wireless and trusted communication links. Eric has also been responsible for designing some of the leading Public Key Infrastructure deployments currently in use and for devising operational policy and procedures to meet the Electronic Signature Act vii 219_sniffer_FM.qxd 6/28/02 2:28 PM Page viii (E-Sign) and the Health Insurance Portability and Accountability Act (HIPAA). He has provided his services to financial, commercial, govern- ment, and military customers including United States Federal Government, Canadian Federal Government and NATO. He regularly speaks at leading security conferences and teaches networking and CISSP classes. He co-authored Hack Proofing Your Wireless Network (Syngress Publishing, ISBN: 1-928994-59-8) and Building A Cisco Wireless LAN (Syngress Publishing, ISBN: 1-928994-58-X). Eric would like to acknowledge the understanding and support of his family and friends during the writing of this book, along with PK, FS, SJ, MW,ATN, SM, and “The Boys” for being who they are. Contributor and Technical Reviewer Randy Cook (MCSE, SCSA) is the Senior UNIX Systems Administrator and Network Engineer for Sapphire Technologies, one of the world’s leading staffing organizations. Randy supports a wide variety of operating systems and mission-critical applications in high-threat environments. Randy has been the co-author and technical editor for several Syngress books including the Sun Certified System Administrator for Solaris 8.0 Study Guide (ISBN: 007-212369-9) and Hack Proofing Sun Solaris 8 (ISBN: 1-928994-44-X). He has also published technical articles for IT industry magazines and hosted a syndicated radio news program. viii 219_sniffer_FM.qxd 6/28/02 2:28 PM Page ix Technical Editors and Contributors Robert J. Shimonski (SCP,CCDP,CCNP,Nortel NNCSS, MCSE, MCP+I, Master CNE, CIP,CIBS, CWP,CIW,GSEC, GCIH, Server+, Network+, Inet+,A+, eBiz+,TICSA, SPS) is the Lead Network Engineer and Security Analyst for a leading manufacturer and provider of linear motion products and engineering.