FREE Monthly Technology Updates One-year Vendor Product Upgrade Protection Plan FREE Membership to Access.Globalknowledge Debra Littlejohn Shinder, MCSE, MCP+I, MCT Thomas W. Shinder, M.D., MCSE, MCP+I, MCT TROUBLESHOOTING WINDOWS 2000 “This book is an important ally in keeping your Windows 2000 TCP/IP network running smoothly.” —Excerpt from Foreword by Ted Rohling, Chief Technical Officer Decision Networks, Inc. TCP/IP 91_FP.qx 11/28/00 4:09 PM Page 1 With over 1,000,000 copies of our MCSE, MCSD, CompTIA, and Cisco study guides in print, we have come to know many of you personally. By listening, we've learned what you like and dislike about typical computer books. The most requested item has been for a web-based service that keeps you current on the topic of the book and related technologies. 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Thank you for giving us the opportunity to serve you. solutions@syngress.com 91_tcpip_FM.qx 2/28/00 10:58 AM Page i 91_tcpip_FM.qx 2/28/00 10:58 AM Page ii WINDOWS 2000 TCP/IP TROUBLESHOOTING 91_tcpip_FM.qx 2/28/00 10:58 AM Page iii Syngress Media, Inc., the author(s), and any person or firm involved in the writing, editing, or produc- tion (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. 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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: 1-928994-11-3 Copy edit by: Beth Roberts Proofreading by: James Melkonian Technical edit by: Thomas W. Shinder, M.D. Page Layout and Art by: Emily Eagar and Index by: Robert Saigh Vesna Williams Project Editor: Julie Smalley Co-Publisher: Richard Kristof Distributed by Publishers Group West 91_tcpip_FM.qx 2/28/00 10:58 AM Page iv We would like to acknowledge the following people for their kindness and support in making this book possible. Richard Kristof, Duncan Anderson, Jennifer Gould, Robert Woodruff, Kevin Murray, Dale Leatherwood, Shelley Everett, Laurie Hedrick, Rhonda Harmon, Lisa Lavallee, and Robert Sanregret of Global Knowledge, for their generous access to the IT industry’s best courses, instructors and training facilities. Ralph Troupe and the team at Rt. 1 Solutions for their invaluable insight into the challenges of designing, deploying and supporting world-class enterprise networks. Karen Cross, Kim Wylie, Harry Kirchner, John Hays, Bill Richter, Michael Ruggiero, Kevin Votel, Brittin Clark, Sarah Schaffer, Luke Kreinberg, Ellen Lafferty and Sarah MacLachlan of Publishers Group West for sharing their incredible marketing experience and expertise. 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The expertise gained each year from pro- viding instructor-led training to hundreds of thousands of students world- wide has been captured in book form to enhance your learning experience. We hope that the quality of these books demonstrates our commitment to your lifelong learning success. Whether you choose to learn through the written word, computer based training, Web delivery, or instructor-led training, Global Knowledge is committed to providing you with the very best in each of these categories. For those of you who know Global Knowledge, or those of you who have just found us for the first time, our goal is to be your lifelong competency partner. Thank your for the opportunity to serve you. We look forward to serving your needs again in the future. Warmest regards, Duncan Anderson President and Chief Executive Officer, Global Knowledge vi From Global Knowledge 91_tcpip_FM.qx 2/28/00 10:58 AM Page vi vii Debra Littlejohn Shinder (MCSE, MCP+I, MCT) is an instructor in the AATP program at Eastfield College, Dallas County Community College District, where she has taught since 1992. She is Webmaster for the cities of Seagoville and Sunnyvale, TX, as well as the family Web site at www.shinder.net. She and her husband, Dr. Thomas W. Shinder, provide consulting and technical support services to Dallas area organizations. She is also the proud mother of daughter, Kristen, who is currently serving in the U.S. Navy in Italy, and son, Kris, who is a high school chess champion. Deb has been a writer for most her life, and has published numerous articles in both technical and non-technical fields. She can be contacted at deb@shinder.net. Thomas W. Shinder, M.D. (MCSE, MCP+I, MCT) is a technology trainer and consultant in the Dallas-Ft. Worth metroplex. Dr. Shinder has consulted with major firms including Xerox, Lucent Technologies and FINA Oil, assisting in the development and implementation of IP-based communications strategies. Dr. Shinder attended Medical School at the University of Illinois in Chicago, and trained in Neurology at the Oregon Health Sciences Center in Portland, Oregon. His fascination with interneuronal communication ultimately melded with his interest in internetworking and led him to focus on Systems Engineering. Tom works passionately with his beloved wife, Deb Shinder, to design elegant and cost-efficient solutions for small- and medium-sized businesses based on Windows NT/2000 platforms. Contributors 91_tcpip_FM.qx 2/28/00 10:58 AM Page vii When facing a new operating environment such as Windows 2000, resources such as this book are essential to your success. Here you will find all the information you need to understand the new TCP/IP administration tools available in the Windows 2000 environment. Rather than looking through countless CDs and volumes of documentation, you can look here. You will find the helpful hints you need to locate and troubleshoot the problems you will inevitably face. Experience and knowledge work together to help you do your job. This book is an important ally in keeping your Windows 2000 TCP/IP network running smoothly. Our success as network analysts is often judged by our ability to find and fix problems. In the past, the process was often a hit-or-miss proposition made worse by difficult-to-use vendor documentation. I have spent countless hours with co-workers just trying to find clues to the nature of a problem because not enough good information was available. Hopefully this book will save you from the hit-or-miss approach, immediately increasing your value as a Windows 2000 network analyst. Read, highlight, dog-ear, tab, use sticky notes; in short, make the book yours! —Ted Rohling, MCP, CCNA, CCDA Mr. Rohling is the Chief Technical Officer of Decision Networks, Inc., a computer networks consulting and training company in San Antonio, Texas. Ted has over 33 years of experience in the computer and networking field. Foreword 91_tcpip_FM.qx 2/28/00 10:58 AM Page viii Contents ix Preface xxv Chapter 1: TCP/IP Overview 1 Introduction 2 TCP/IP’s “Net” Worth 2 More Power, More Flexibility—and More Potential for Problems 4 What’s Ahead in This Chapter 4 TCP/IP: Where It Came From, and Where It’s Going 5 History of the TCP/IP Protocols 5 The Role of the U.S. Department of Defense 6 From ARPAnet to the Internet 7 Another Contender for the Title: The OSI Protocol Suite 8 The Future of TCP/IP 10 Looking Ahead to IPv6 10 Networking Models 14 The Purpose of the Models 15 Why Use Layered Models? 15 The ISO OSI Model 16 Seven Layers of the Networking World 16 Layer 7: The Application Layer 18 Layer 6: The Presentation Layer 19 Layer 5: The Session Layer 20 Layer 4: The Transport Layer 21 Layer 3: The Network Layer 24 Layer 2: The Data Link Layer 25 Layer 1: The Physical Layer 29 The DoD Model 33 The Application/Process Layer 34 The Host-to-Host (Transport) Layer 34 The Internetworking Layer 34 The Network Interface Layer 34 The Microsoft Windows 2000 Networking Model 34 The Application and User Mode Services Component 35 The API Boundary Layer 36 The File System Drivers 37 The TDI Boundary Layer 37 The Network Transport Protocol Component 38 The NDIS Boundary Layer 38 The NDIS Wrapper 38 A Family of Protocols: The TCP/IP Suite 38 Application Layer Protocols 38 FTP 39 SNMP 39 91_TCPIP_TOC.qx 2/25/00 6:21 PM Page ix [...]... Chapter 4: Windows 2000 TCP/IP Internals Introduction RFC Compliance Enhancements to the TCP/IP Stack in Windows 2000 RFC 13 23: TCP Extensions for High Performance 10 0 10 1 10 2 10 3 10 4 10 5 10 5 10 6 10 6 10 7 10 8 10 8 10 9 10 9 10 9 11 0 11 0 11 1 11 1 11 2 11 2 11 2 11 2 11 3 11 7 11 7 11 7 12 0 12 2 12 2 12 3 12 5 12 6 12 6 12 7 12 7 12 7 12 7 12 8 13 1 13 3 13 5 13 6 13 6 13 8 14 0 91_ TCPIP_TOC.qx 2/25/00 6: 21 PM Page xiii Windows 2000. .. Common TCP/IP Registry Values Registry Settings that Should Not Be Edited Summary FAQs Chapter 5: Using Network Monitoring and Troubleshooting Tools in Windows 2000 Introduction Windows 2000 Monitoring Tools Basic Monitoring Guidelines Baselining Documentation Backing Up Analysis 14 0 15 0 15 2 15 3 15 5 15 6 15 7 15 8 15 8 15 9 16 0 16 1 16 4 16 5 16 6 16 7 16 8 16 9 17 0 17 1 17 1 17 2 17 2 17 3 17 3 17 4 17 4 17 5 17 5 17 6 17 8 17 9... 91_ TCPIP_TOC.qx x 2/25/00 6: 21 PM Page x Troubleshooting Windows 2000 TCP/IP • Contents Telnet SMTP HTTP NNTP Transport Layer Protocols TCP UDP Network Layer Protocols IP ARP and RARP ICMP IGMP TCP/IP Utilities Basic Network Design Planning as Preventative Medicine Testing and Implementation Prototyping Pilot Programs Rollout Summary FAQs Chapter 2: Setting Up a Windows 2000 TCP/IP Network... 12 :26 PM Page 1 Chapter 1 TCP/IP Overview Solutions in this chapter: s History of TCP/IP (ARPAnet); The Future of TCP/IP (IPv6) s The TCP/IP Protocol Suite s The OSI, DoD, and Windows Networking Models s Basic Network Design Issues 1 91_ tcpip_ 01. qx 2 2/25/00 12 :26 PM Page 2 Chapter 1 • TCP/IP Overview Introduction The Transmission Control Protocol/Internet Protocol (also referred to as the TCP/IP protocol... 288 290 290 296 299 302 302 302 305 306 309 309 310 310 310 311 311 311 311 312 312 313 xv 91_ TCPIP_TOC.qx xvi 2/25/00 6: 21 PM Page xvi Troubleshooting Windows 2000 TCP/IP • Contents Chapter 7: Troubleshooting Windows 2000 DNS Problems Introduction The Difference between NetBIOS Names and Host Names Flat versus Hierarchical Namespace NetBIOS on a TCP/IP Network Characteristics of Host Names The Need... 17 8 17 9 18 0 18 1 18 2 18 5 18 7 18 8 18 8 18 8 18 8 18 9 18 9 18 9 xiii 91_ TCPIP_TOC.qx xiv 2/25/00 6: 21 PM Page xiv Troubleshooting Windows 2000 TCP/IP • Contents Performance Logs and Alerts Counters Log File Format Alerts Network Monitor Filtering Security Issues Installation Using the Program Capture Window Panes Extra Tools Buffers Collecting Data Filtered Captures Event Viewer Using TCP/IP Utilities PING -t... 6: 21 PM Page xxii xxii Troubleshooting Windows 2000 TCP/IP • Contents Using Event Viewer for NNTP Troubleshooting Common NNTP Problems Summary FAQs Chapter 13 : Windows 2000 TCP/IP Fast Track Introduction TCP/IP: What It Is (and Isn’t) TCP/IP History and Future in a Nutshell Where TCP/IP Fits into the Networking Models The Members of the Suite Network Design and Planning Issues Design and Setup of a Windows. .. IIS Properties Troubleshooting FTP Server Problems End-User Problems New Connections Not Being Accepted Users Prompted for Username and Password Connection Limit Exceeded Troubleshooting NNTP Server Problems 574 576 576 577 578 578 580 5 81 583 583 583 584 586 586 586 586 586 588 588 589 589 590 5 91 5 91 595 599 600 600 602 602 604 608 609 609 611 612 613 614 616 617 617 617 619 620 6 21 xxi 91_ TCPIP_TOC.qx... Introduction to Name Resolution Services NetBIOS Name Resolution 19 0 19 2 19 6 19 6 19 8 19 9 19 9 19 9 19 9 200 200 202 204 207 216 219 219 220 220 220 2 21 2 21 2 21 223 223 225 227 227 227 228 233 238 239 242 242 244 250 250 250 2 51 2 51 252 257 258 258 91_ TCPIP_TOC.qx 2/25/00 6: 21 PM Page xv Troubleshooting Windows 2000 TCP/IP • Contents Windows 2000 Methods of NetBIOS Name Resolution NetBIOS Name Cache NetBIOS... Enhancements Inside IP CIDR Support Multihoming IP Multicasting Duplicate Address Detection Inside TCP and UDP 6 21 622 626 628 6 31 632 632 632 633 634 635 635 636 636 636 636 637 637 637 637 637 638 638 638 639 639 639 639 640 640 6 41 6 41 6 41 6 41 6 41 642 642 642 643 643 643 643 643 644 644 644 91_ TCPIP_TOC.qx 2/25/00 6: 21 PM Page xxiii Troubleshooting Windows 2000 TCP/IP • Contents xxiii TCP UDP TCP/IP Registry . Troubleshooting Windows 2000 TCP/IP • Contents Telnet 40 SMTP 40 HTTP 41 NNTP 41 Transport Layer Protocols 42 TCP 42 UDP 42 Network Layer Protocols 42 IP 42 ARP and RARP 42 ICMP 43 IGMP 43 TCP/IP. for Troubleshooting PPP Connections 487 Using Network Monitor for PPP Analysis 487 91_ TCPIP_TOC.qx 2/25/00 6: 21 PM Page xviii Troubleshooting Windows 2000 TCP/IP • Contents xix Enabling PPP Event. Diagnosis Model 10 8 Examination 10 8 Diagnosis 10 9 Treatment 10 9 Follow-Up 10 9 SARA Model 11 0 Scanning 11 0 Analysis 11 1 Response 11 1 Assessment 11 2 Putting the Models to Work for You 11 2 The Information-Gathering