diff options
Diffstat (limited to 'docs/htmldocs/Samba3-ByExample/preface.html')
| -rw-r--r-- | docs/htmldocs/Samba3-ByExample/preface.html | 386 |
1 files changed, 386 insertions, 0 deletions
diff --git a/docs/htmldocs/Samba3-ByExample/preface.html b/docs/htmldocs/Samba3-ByExample/preface.html new file mode 100644 index 0000000000..1fee0be58d --- /dev/null +++ b/docs/htmldocs/Samba3-ByExample/preface.html @@ -0,0 +1,386 @@ +<html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Preface</title><link rel="stylesheet" href="samba.css" type="text/css"><meta name="generator" content="DocBook XSL Stylesheets V1.71.0"><link rel="start" href="index.html" title="Samba-3 by Example"><link rel="up" href="index.html" title="Samba-3 by Example"><link rel="prev" href="pr03.html" title="Foreword"><link rel="next" href="ExNetworks.html" title="Part I. Example Network Configurations"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Preface</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="pr03.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="ExNetworks.html">Next</a></td></tr></table><hr></div><div class="preface" lang="en"><div class="titlepage"><div><div><h2 class="title"><a name="preface"></a>Preface</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="sect1"><a href="preface.html#id274305">Why Is This Book Necessary?</a></span></dt><dd><dl><dt><span class="sect2"><a href="preface.html#id274342">Samba 3.0.20 Update Edition</a></span></dt></dl></dd><dt><span class="sect1"><a href="preface.html#id274092">Prerequisites</a></span></dt><dt><span class="sect1"><a href="preface.html#id315668">Approach</a></span></dt><dt><span class="sect1"><a href="preface.html#id315719">Summary of Topics</a></span></dt><dt><span class="sect1"><a href="preface.html#id316343">Conventions Used</a></span></dt></dl></div><p> + Network administrators live busy lives. We face distractions and pressures + that drive us to seek proven, working case scenarios that can be easily + implemented. Often this approach lands us in trouble. There is a + saying that, geometrically speaking, the shortest distance between two + points is a straight line, but practically we find that the quickest + route to a stable network solution is the long way around. + </p><p> + This book is your means to the straight path. It provides step-by-step, + proven, working examples of Samba deployments. If you want to deploy + Samba-3 with the least effort, or if you want to become an expert at deploying + Samba-3 without having to search through lots of documentation, this + book is the ticket to your destination. + </p><p> + Samba is software that can be run on a platform other than Microsoft Windows, + for example, UNIX, Linux, IBM System 390, OpenVMS, and other operating systems. + Samba uses the TCP/IP protocol that is installed on the host server. When + correctly configured, it allows that host to interact with a Microsoft Windows + client or server as if it is a Windows file and print server. This book + will help you to implement Windows-compatible file and print services. + </p><p> + The examples presented in this book are typical of various businesses and + reflect the problems and challenges they face. Care has been taken to preserve + attitudes, perceptions, practices, and demands from real network case studies. + The maximum benefit may be obtained from this book by working carefully through + each exercise. You may be in a hurry to satisfy a specific need, so feel + free to locate the example that most closely matches your need, copy it, and + innovate as much as you like. Above all, enjoy the process of learning the + secrets of MS Windows networking that is truly liberated by Samba. + </p><p> + The focus of attention in this book is Samba-3. Specific notes are made in + respect of how Samba may be made secure. This book does not attempt to provide + detailed information regarding secure operation and configuration of peripheral + services and applications such as OpenLDAP, DNS and DHCP, the need for which + can be met from other resources that are dedicated to the subject. + </p><div class="sect1" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id274305"></a>Why Is This Book Necessary?</h2></div></div></div><p> + This book is the result of observations and feedback. The feedback from + the Samba-HOWTO-Collection has been positive and complimentary. There + have been requests for far more worked examples, a + “<span class="quote">Samba Cookbook,</span>” and for training materials to + help kick-start the process of mastering Samba. + </p><p> + The Samba mailing lists users have asked for sample configuration files + that work. It is natural to question one's own ability to correctly + configure a complex tool such as Samba until a minimum necessary + knowledge level has been attained. + </p><p> + The Samba-HOWTO-Collection as does <span class="emphasis"><em>The Official Samba-3 HOWTO and + Reference Guide</em></span> documents Samba features and functionality in + a topical context. This book takes a completely different approach. It + walks through Samba network configurations that are working within particular + environmental contexts, providing documented step-by-step implementations. + All example case configuration files, scripts, and other tools are provided + on the CD-ROM. This book is descriptive, provides detailed diagrams, and + makes deployment of Samba-3 a breeze. + </p><div class="sect2" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id274342"></a>Samba 3.0.20 Update Edition</h3></div></div></div><p> + The Samba 3.0.x series has been remarkably popular. At the time this book first + went to print samba-3.0.2 was being released. There have been significant modifications + and enhancements between samba-3.0.2 and samba-3.0.14 (the current release) that + necessitate this documentation update. This update has the specific intent to + refocus this book so that its guidance can be followed for samba-3.0.20 + and beyond. Further changes are expected as Samba-3 matures further and will + be reflected in future updates. + </p><p> + The changes shown in <a href="preface.html#pref-new" title="Table 1. Samba Changes 3.0.2 to 3.0.20">???</a> are incorporated in this update. + </p><div class="table"><a name="pref-new"></a><p class="title"><b>Table 1. Samba Changes 3.0.2 to 3.0.20</b></p><div class="table-contents"><table summary="Samba Changes 3.0.2 to 3.0.20" border="1"><colgroup><col align="left"><col align="justify"></colgroup><thead><tr><th align="left"> + <p> + New Feature + </p> + </th><th align="left"> + <p> + Description + </p> + </th></tr></thead><tbody><tr><td align="left"> + <p> + Winbind Case Handling + </p> + </td><td align="justify"> + <p> + User and group names returned by <code class="literal">winbindd</code> are now converted to lower case + for better consistency. Samba implementations that depend on the case of information returned + by winbind (such as %u and %U) must now convert the dependency to expecting lower case values. + This affects mail spool files, home directories, valid user lines in the <code class="filename">smb.conf</code> file, etc. + </p> + </td></tr><tr><td align="left"> + <p> + Schema Changes + </p> + </td><td align="justify"> + <p> + Addition of code to handle password aging, password uniqueness controls, bad + password instances at logon time, have made necessary extensions to the SambaSAM + schema. This change affects all sites that use LDAP and means that the directory + schema must be updated. + </p> + </td></tr><tr><td align="left"> + <p> + Username Map Handling + </p> + </td><td align="justify"> + <p> + Samba-3.0.8 redefined the behavior: Local authentication results in a username map file + lookup before authenticating the connection. All authentication via an external domain + controller will result in the use of the fully qualified name (i.e.: DOMAIN\username) + after the user has been successfully authenticated. + </p> + </td></tr><tr><td align="left"> + <p> + UNIX Extension Handling + </p> + </td><td align="justify"> + <p> + Symbolically linked files and directories on the UNIX host to absolute paths will + now be followed. This can be turned off using “<span class="quote">wide links = No</span>” in + the share stanza in the <code class="filename">smb.conf</code> file. Turning off “<span class="quote">wide links</span>” + support will degrade server performance because each path must be checked. + </p> + </td></tr><tr><td align="left"> + <p> + Privileges Support + </p> + </td><td align="justify"> + <p> + Versions of Samba prior to samba-3.0.11 required the use of the UNIX <code class="constant">root</code> + account from network Windows clients. The new “<span class="quote">enable privileges = Yes</span>” capability + means that functions such as adding machines to the domain, managing printers, etc. can now + be delegated to normal user accounts or to groups of users. + </p> + </td></tr></tbody></table></div></div><br class="table-break"></div></div><div class="sect1" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id274092"></a>Prerequisites</h2></div></div></div><p> + This book is not a tutorial on UNIX or Linux administration. UNIX and Linux + training is best obtained from books dedicated to the subject. This book + assumes that you have at least the basic skill necessary to use these operating + systems, and that you can use a basic system editor to edit and configure files. + It has been written with the assumption that you have experience with Samba, + have read <span class="emphasis"><em>The Official Samba-3 HOWTO and Reference Guide</em></span> and + the Samba-HOWTO-Collection, or that you have familiarity with Microsoft Windows. + </p><p> + If you do not have this experience, you can follow the examples in this book but may + find yourself at times intimidated by assumptions made. In this situation, you + may need to refer to administrative guides or manuals for your operating system + platform to find what is the best method to achieve what the text of this book describes. + </p></div><div class="sect1" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id315668"></a>Approach</h2></div></div></div><p> + The first chapter deals with some rather thorny network analysis issues. Do not be + put off by this. The information you glean, even without a detailed understanding + of network protocol analysis, can help you understand how Windows networking functions. + </p><p> + Each following chapter of this book opens with the description of a networking solution + sought by a hypothetical site. Bob Jordan is a hypothetical decision maker + for an imaginary company, <code class="constant">Abmas Biz NL</code>. We will use the + non-existent domain name <code class="constant">abmas.biz</code>. All <span class="emphasis"><em>facts</em></span> + presented regarding this company are fictitious and have been drawn from a variety of real + business scenarios over many years. Not one of these reveal the identify of the + real-world company from which the scenario originated. + </p><p> + In any case, Mr. Jordan likes to give all his staff nasty little assignments. + Stanley Saroka is one of his proteges; Christine Roberson is the network administrator + Bob trusts. Jordan is inclined to treat other departments well because they finance + Abmas IT operations. + </p><p> + Each chapter presents a summary of the network solution we have chosen to + demonstrate together with a rationale to help you to understand the + thought process that drove that solution. The chapter then documents in precise + detail all configuration files and steps that must be taken to implement the + example solution. Anyone wishing to gain serious value from this book will + do well to take note of the implications of points made, so watch out for the + <span class="emphasis"><em>this means that</em></span> notations. + </p><p> + Each chapter has a set of questions and answers to help you to + to understand and digest key attributes of the solutions presented. + </p></div><div class="sect1" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id315719"></a>Summary of Topics</h2></div></div></div><p> + The contents of this second edition of <span class="emphasis"><em>Samba-3 by Example</em></span> + have been rearranged based on feedback from purchasers of the first edition. + </p><p> + Clearly the first edition contained most of what was needed and that was missing + from other books that cover this difficult subject. The new arrangement adds + additional material to meet consumer requests and includes changes that originated + as suggestions for improvement. + </p><p> + Chapter 1 now dives directly into the heart of the implementation of Windows + file and print server networks that use Samba at the heart. + </p><div class="variablelist"><dl><dt><span class="term">Chapter 1 No Frills Samba Servers.</span></dt><dd><p> + Here you design a solution for three different business scenarios, each for a + company called Abmas. There are two simple networking problems and one slightly + more complex networking challenge. In the first two cases, Abmas has a small + simple office, and they want to replace a Windows 9x peer-to-peer network. The + third example business uses Windows 2000 Professional. This must be simple, + so let's see how far we can get. If successful, Abmas grows quickly and + soon needs to replace all servers and workstations. + </p><p><span class="emphasis"><em>TechInfo</em></span> This chapter demands: + </p><div class="itemizedlist"><ul type="disc"><li><p>Case 1: The simplest <code class="filename">smb.conf</code> file that may + reasonably be used. Works with Samba-2.x also. This + configuration uses Share Mode security. Encrypted + passwords are not used, so there is no + <code class="filename">smbpasswd</code> file. + </p></li><li><p>Case 2: Another simple <code class="filename">smb.conf</code> file that adds + WINS support and printing support. This case deals with + a special requirement that demonstrates how to deal with + purpose-built software that has a particular requirement + for certain share names and printing demands. This + configuration uses Share Mode security and also works with + Samba-2.x. Encrypted passwords are not used, so there is no + <code class="filename">smbpasswd</code> file. + </p></li><li><p>Case 3: This <code class="filename">smb.conf</code> configuration uses User Mode + security. The file share configuration demonstrates + the ability to provide master access to an administrator + while restricting all staff to their own work areas. + Encrypted passwords are used, so there is an implicit + <code class="filename">smbpasswd</code> file. + </p></li></ul></div><p> + </p></dd><dt><span class="term">Chapter 2 Small Office Networking.</span></dt><dd><p> + Abmas is a successful company now. They have 50 network users + and want a little more varoom from the network. This is a typical + small office and they want better systems to help them to grow. This is + your chance to really give advanced users a bit more functionality and usefulness. + </p><p><span class="emphasis"><em>TechInfo</em></span> This <code class="filename">smb.conf</code> file + makes use of encrypted passwords, so there is an <code class="filename">smbpasswd</code> + file. It also demonstrates use of the <em class="parameter"><code>valid users</code></em> and + <em class="parameter"><code>valid groups</code></em> to restrict share access. The Windows + clients access the server as Domain members. Mobile users log onto + the Domain while in the office, but use a local machine account while on the + road. The result is an environment that answers mobile computing user needs. + </p></dd><dt><span class="term">Chapter 3 Secure Office Networking.</span></dt><dd><p> + Abmas is growing rapidly now. Money is a little tight, but with 130 + network users, security has become a concern. They have many new machines + to install and the old equipment will be retired. This time they want the + new network to scale and grow for at least two years. Start with a sufficient + system and allow room for growth. You are now implementing an Internet + connection and have a few reservations about user expectations. + </p><p><span class="emphasis"><em>TechInfo</em></span> This <code class="filename">smb.conf</code> file + makes use of encrypted passwords, and you can use a <code class="filename">tdbsam</code> + password backend. Domain logons are introduced. Applications are served from the central + server. Roaming profiles are mandated. Access to the server is tightened up + so that only domain members can access server resources. Mobile computing + needs still are catered to. + </p></dd><dt><span class="term">Chapter 4 The 500 User Office.</span></dt><dd><p> + The two-year projections were met. Congratulations, you are a star. + Now Abmas needs to replace the network. Into the existing user base, they + need to merge a 280-user company they just acquired. It is time to build a serious + network. There are now three buildings on one campus and your assignment is + to keep everyone working while a new network is rolled out. Oh, isn't it nice + to roll out brand new clients and servers! Money is no longer tight, you get + to buy and install what you ask for. You will install routers and a firewall. + This is exciting! + </p><p><span class="emphasis"><em>TechInfo</em></span> This <code class="filename">smb.conf</code> file + makes use of encrypted passwords, and a <code class="filename">tdbsam</code> + password backend is used. You are not ready to launch into LDAP yet, so you + accept the limitation of having one central Domain Controller with a Domain + Member server in two buildings on your campus. A number of clever techniques + are used to demonstrate some of the smart options built into Samba. + </p></dd><dt><span class="term">Chapter 5 Making Happy Users.</span></dt><dd><p> + Congratulations again. Abmas is happy with your services and you have been given another raise. + Your users are becoming much more capable and are complaining about little + things that need to be fixed. Are you up to the task? Mary says it takes her 20 minutes + to log onto the network and it is killing her productivity. Email is a bit <span class="emphasis"><em> + unreliable</em></span> have you been sleeping on the job? We do not discuss the + technology of email but when the use of mail clients breaks because of networking + problems, you had better get on top of it. It's time for a change. + </p><p><span class="emphasis"><em>TechInfo</em></span> This <code class="filename">smb.conf</code> file + makes use of encrypted passwords; a distributed <code class="filename">ldapsam</code> + password backend is used. Roaming profiles are enabled. Desktop profile controls + are introduced. Check out the techniques that can improve the user experience + of network performance. As a special bonus, this chapter documents how to configure + smart downloading of printer drivers for drag-and-drop printing support. And, yes, + the secret of configuring CUPS is clearly documented. Go for it; this one will + tease you, too. + </p></dd><dt><span class="term">Chapter 6 A Distributed 2000 User Network.</span></dt><dd><p> + Only eight months have passed, and Abmas has acquired another company. You now need to expand + the network further. You have to deal with a network that spans several countries. + There are three new networks in addition to the original three buildings at the head-office + campus. The head office is in New York and you have branch offices in Washington, Los Angeles, and + London. Your desktop standard is Windows XP Professional. In many ways, everything has changed + and yet it must remain the same. Your team is primed for another roll-out. You know there are + further challenges ahead. + </p><p><span class="emphasis"><em>TechInfo</em></span> Slave LDAP servers are introduced. Samba is + configured to use multiple LDAP backends. This is a brief chapter; it assumes that the + technology has been mastered and gets right down to concepts and how to deploy them. + </p></dd><dt><span class="term">Chapter 7 Adding UNIX/Linux Servers and Clients.</span></dt><dd><p> + Well done, Bob, your team has achieved much. Now help Abmas integrate the entire network. + You want central control and central support and you need to cut costs. How can you reduce administrative + overheads and yet get better control of the network? + </p><p> + This chapter has been contributed by Mark Taylor <code class="email"><<a href="mailto:mark.taylor@siriusit.co.uk">mark.taylor@siriusit.co.uk</a>></code> + and is based on a live site. For further information regarding this example case, + please contact Mark directly. + </p><p><span class="emphasis"><em>TechInfo</em></span> It is time to consider how to add Samba servers + and UNIX and Linux network clients. Users who convert to Linux want to be able to log on + using Windows network accounts. You explore nss_ldap, pam_ldap, winbind, and a few neat + techniques for taking control. Are you ready for this? + </p></dd><dt><span class="term">Chapter 8 Updating Samba-3.</span></dt><dd><p> + This chapter is the result of repeated requests for better documentation of the steps + that must be followed when updating or upgrading a Samba server. It attempts to cover + the entire subject in broad-brush but at the same time provides detailed background + information that is not covered elsewhere in the Samba documentation. + </p><p><span class="emphasis"><em>TechInfo</em></span> Samba stores a lot of essential network + information in a large and growing collection of files. This chapter documents the + essentials of where those files may be located and how to find them. It also provides + an insight into inter-related matters that affect a Samba installation. + </p></dd><dt><span class="term">Chapter 9 Migrating NT4 Domain to Samba-3.</span></dt><dd><p> + Another six months have passed. Abmas has acquired yet another company. You will find a + way to migrate all users off the old network onto the existing network without loss + of passwords and will effect the change-over during one weekend. May the force (and caffeine) be with + you, may you keep your back to the wind and may the sun shine on your face. + </p><p><span class="emphasis"><em>TechInfo</em></span> This chapter demonstrates the use of + the <code class="literal">net rpc migrate</code> facility using an LDAP ldapsam backend, and also + using a tdbsam passdb backend. Both are much-asked-for examples of NT4 Domain migration. + </p></dd><dt><span class="term">Chapter 10 Migrating NetWare 4.11 Server to Samba.</span></dt><dd><p> + Misty Stanley-Jones has contributed information that summarizes her experience at migration + from a NetWare server to Samba-3. + </p><p><span class="emphasis"><em>TechInfo</em></span> The documentation provided demonstrates + how one site migrated from NetWare to Samba. Some alternatives tools are mentioned. These + could be used to provide another pathway to a successful migration. + </p></dd><dt><span class="term">Chapter 11 Active Directory, Kerberos and Security.</span></dt><dd><p> + Abmas has acquired another company that has just migrated to running Windows Server 2003 and + Active Directory. One of your staff makes offhand comments that land you in hot water. + A network security auditor is hired by the head of the new business and files a damning + report, and you must address the <span class="emphasis"><em>defects</em></span> reported. You have hired new + network engineers who want to replace Microsoft Active Directory with a pure Kerberos + solution. How will you handle this? + </p><p><span class="emphasis"><em>TechInfo</em></span> This chapter is your answer. Learn about + share access controls, proper use of UNIX/Linux file system access controls, and Windows + 200x Access Control Lists. Follow these steps to beat the critics. + </p></dd><dt><span class="term">Chapter 12 Integrating Additional Services.</span></dt><dd><p> + The battle is almost over, Samba-3 has won the day. Your team are delighted and now you + find yourself at yet another cross-roads. Abmas have acquired a snack food business, you + made promises you must keep. IT costs must be reduced, you have new resistance, but you + will win again. This time you choose to install the Squid proxy server to validate the + fact that Samba is far more than just a file and print server. SPNEGO authentication + support means that your Microsoft Windows clients gain transparent proxy access. + </p><p><span class="emphasis"><em>TechInfo</em></span> Samba provides the <code class="literal">ntlm_auth</code> + module that makes it possible for MS Windows Internet Explorer to connect via the Squid Web + and FTP proxy server. You will configure Samba-3 as well as Squid to deliver authenticated + access control using the Active Directory Domain user security credentials. + </p></dd><dt><span class="term">Chapter 13 Performance, Reliability and Availability.</span></dt><dd><p> + Bob, are you sure the new Samba server is up to the load? Your network is serving many + users who risk becoming unproductive. What can you do to keep ahead of demand? Can you + keep the cost under control also? What can go wrong? + </p><p><span class="emphasis"><em>TechInfo</em></span> Hot tips that put chili into your + network. Avoid name resolution problems, identify potential causes of network collisions, + avoid Samba configuration options that will weigh the server down. MS distributed file + services to make your network fly and much more. This chapter contains a good deal of + “<span class="quote">Did I tell you about this...?</span>” type of hints to help keep your name on the top + performers list. + </p></dd><dt><span class="term">Chapter 14 Samba Support.</span></dt><dd><p> + This chapter has been added specifically to help those who are seeking professional + paid support for Samba. The critics of Open Source Software often assert that + there is no support for free software. Some critics argue that free software + undermines the service that proprietary commercial software vendors depend on. + This chapter explains what are the support options for Samba and the fact that + a growing number of businesses make money by providing commercial paid-for + Samba support. + </p></dd><dt><span class="term">Chapter 15 A Collection of Useful Tid-bits.</span></dt><dd><p> + Sometimes it seems that there is not a good place for certain odds and ends that + impact Samba deployment. Some readers would argue that everyone can be expected + to know this information, or at least be able to find it easily. So to avoid + offending a reader's sensitivities, the tid-bits have been placed in this chapter. + Do check out the contents, you may find something of value among the loose ends. + </p></dd><dt><span class="term">Chapter 16 Windows Networking Primer.</span></dt><dd><p> + Here we cover practical exercises to help us to understand how MS Windows + network protocols function. A network protocol analyzer helps you to + appreciate the fact that Windows networking is highly dependent on broadcast + messaging. Additionally, you can look into network packets that a Windows + client sends to a network server to set up a network connection. On completion, + you should have a basic understanding of how network browsing functions and + have seen some of the information a Windows client sends to + a file and print server to create a connection over which file and print + operations may take place. + </p></dd></dl></div></div><div class="sect1" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id316343"></a>Conventions Used</h2></div></div></div><p> + The following notation conventions are used throughout this book: + </p><div class="itemizedlist"><ul type="disc"><li><p> + TOSHARG2 is used as an abbreviation for the book, “<span class="quote">The Official Samba-3 + HOWTO and Reference Guide, Second Edition</span>” Editors: John H. Terpstra and Jelmer R. Vernooij, + Publisher: Prentice Hall, ISBN: 0131882228. + </p></li><li><p> + S3bE2 is used as an abbreviation for the book, “<span class="quote">Samba-3 by Example, Second Edition</span>” + Editors: John H. Terpstra, Publisher: Prentice Hall, ISBN: 013188221X. + </p></li><li><p> + Directories and filenames appear in mono-font. For example, + <code class="filename">/etc/pam.conf</code>. + </p></li><li><p> + Executable names are bolded. For example, <code class="literal">smbd</code>. + </p></li><li><p> + Menu items and buttons appear in bold. For example, click <span class="guibutton">Next</span>. + </p></li><li><p> + Selecting a menu item is indicated as: + <span class="guimenu">Start</span> → <span class="guimenuitem">Control Panel</span> → <span class="guimenuitem">Administrative Tools</span> → <span class="guimenuitem">Active Directory Users and Computers</span> + </p></li></ul></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="pr03.html">Prev</a> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="ExNetworks.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Foreword </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> Part I. Example Network Configurations</td></tr></table></div></body></html> |