Sams Teach Yourself Networking, source codes,dokumenty
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Teach Yourself
Networking
in
24
Hours
Joe Habraken
Matt Hayden
THIRD EDITION
800 East 96th Street, Indianapolis, Indiana, 46240 USA
Sams Teach Yourself Networking in 24 Hours, Third
Edition
Copyright
Acquisitions Editor
Jenny Watson
2004 by Sams Publishing
All rights reserved. No part of this book shall be reproduced, stored in a
retrieval system, or transmitted by any means, electronic, mechanical,
photocopying, recording, or otherwise, without written permission from
the publisher. No patent liability is assumed with respect to the use of
the information contained herein. Although every precaution has been
taken in the preparation of this book, the publisher and author assume
no responsibility for errors or omissions. Nor is any liability assumed for
damages resulting from the use of the information contained herein.
International Standard Book Number: 0-672-32608-6
Library of Congress Catalog Card Number: 2003094095
Printed in the United States of America
First Printing: May 2004
07
Development Editor
Jonathan Steever
Managing Editor
Charlotte Clapp
Senior Project Editor
George Nedeff
Copy Editor
Rhonda Tinch-Mize
Indexer
Rebecca Salemo
Proofreader
Linda Seifert
06
05
04
4
3
2
Trademarks
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service marks have been appropriately capitalized. Sams Publishing
cannot attest to the accuracy of this information. Use of a term in this
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Technical Editor
Marc Charney
Publishing Coordinator
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Interior Designer
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Warning and Disclaimer
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rate as possible, but no warranty or fitness is implied. The information
provided is on an “as is” basis. The authors and the publisher shall
have neither liability nor responsibility to any person or entity with
respect to any loss or damages arising from the information contained
in this book.
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Contents at a Glance
Introduction
..............................................................................
1
Part I: What Exactly Is Networking?
HOUR 1
An Overview of Networking
......................................................
7
2
The Benefits of Networking
......................................................
25
Part II: The Basics
HOUR 3
Getting Data from Here to There: How Networking Works
.......
41
4
Computer Concepts
.................................................................
63
5
Network Concepts
...................................................................
81
6
Extending Your LAN: Wide Area Networks
.............................
109
7
Remote Networking
...............................................................
133
Part III: Building Networks
HOUR 8
Network Criteria
....................................................................
151
9
Designing a Network
.............................................................
163
10
Selecting Network Hardware and Software
.............................
187
11
Assembling a Network
..........................................................
205
12
Network Applications
............................................................
219
13
Connecting to the Internet
....................................................
237
Part IV: Network Operating Systems and Providing Network-Wide Services
HOUR 14
TCP/IP
..................................................................................
255
15
Microsoft Networking
............................................................
271
16
UNIX and Linux Networking
.................................................
291
17
Common Network Services and How to Provide Them
...........
309
Part V: Introduction to Network Administration
HOUR 18
What Is a Network Administrator?
........................................
325
19
Security
.................................................................................
339
20
Managing an Existing Network
.............................................
357
21
Network Troubleshooting Tips and Tricks
...............................
375
22
A Day in the Life of a Network Administrator
........................
393
Part VI: The Future of Networking
HOUR 23
Wireless Networking
..............................................................
405
24
Where Are Networks Going from Here?
..................................
417
Glossary
................................................................................
429
Index
....................................................................................
449
Table of Contents
Introduction
1
Part I: What Exactly Is Networking?
HOUR 1:
An Overview of Networking 7
What Is a Network?
............................................................................
8
Why Build a Network?
........................................................................
9
How Networks Are Put Together
........................................................
10
The Physical Network
................................................................
10
Network Devices
......................................................................
15
The Varieties of Networks
..................................................................
16
LANs
........................................................................................
16
WANs
......................................................................................
17
How the Internet Relates to Your Network
........................................
19
What Is the Internet?
................................................................
19
Understanding Bandwidth
........................................................
21
Understanding Different Kinds of Internet Connections
..............
21
Why Does the Internet Matter for Your Network?
......................
22
Intranets, Extranets, VPN, and the Internet
..............................
23
Summary
........................................................................................
23
Q&A
................................................................................................
24
HOUR 2:
The Benefits of Networking 25
Computing Before Computer Networks
............................................
26
Networking’s Breakthrough: Packet-Switched Data
....................
27
Life Without Computer Networks
......................................................
31
Inefficient Resource Sharing
......................................................
31
Slo-o-ow Communications
........................................................
32
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