Doug Lowe - Networking For Dummies

Networking For Dummies®, 12th Edition

Published by: John Wiley & Sons, Inc.,111 River Street, Hoboken, NJ 07030-5774, www.wiley.com

Copyright © 2020 by John Wiley & Sons, Inc., Hoboken, New Jersey

Published simultaneously in Canada

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Library of Congress Control Number: 2020933431

ISBN 978-1-119-64850-5 (pbk); ISBN 978-1-119-74867-0 (ebk); ISBN 978-1-119-74868-7 (ebk)

1 Cover

2 Introduction Introduction Welcome to the 12th edition of Networking For Dummies, the book that’s written especially for people who have this nagging feeling in the back of their minds that they should network their computers but haven’t a clue about how to start or where to begin. Do you often copy a spreadsheet to a flash drive just so you can give it to someone else in your office? Are you frustrated because you can’t use the fancy color laser printer that’s on the financial secretary’s computer? Do you wait in line to use the computer that has the customer database? You need a network! Or maybe you already have a network, but you have just one problem: Someone promised that a network would make your life easier, but it’s instead turned your computing life upside down. Just when you had this computer thing figured out, someone popped into your office, hooked up a cable, and said, “Happy networking!” Makes you want to scream. Regardless, you’ve found the right book. Help is here, within these humble pages. This book talks about networks in everyday (and often irreverent) terms. The language is friendly; you don’t need a graduate education to get through it. And the occasional potshot helps unseat the hallowed and sacred traditions of networkdom, bringing just a bit of fun to an otherwise dry subject. The goal is to bring the lofty precepts of networking down to earth, where you can touch them and squeeze them and say, “What’s the big deal? I can do this!” About This Book About This Book This isn’t the kind of book you pick up and read from start to finish, as if it were a cheap novel. If I ever see you reading it at the beach, I’ll kick sand in your face. This book is more like a reference, the kind of book you can pick up, turn to just about any page, and start reading. Each chapter covers a specific aspect of networking, such as printing from the network, hooking up network cables, or setting up security so that bad guys can’t break in. Just turn to the chapter you’re interested in and start reading. Each chapter is divided into self-contained chunks, all related to the major theme of the chapter. For example, the chapter on hooking up the network cable contains nuggets like these: What is Ethernet? All about cables To shield or not to shield Wall jacks and patch panels Switches You don’t have to memorize anything in this book. It’s a need-to-know book: You pick it up when you need to know something. Need to know what 100BaseT is? Pick up the book. Need to know how to create good passwords? Pick up the book. Otherwise, put it down and get on with your life. Feel free to skip the sidebars that appear throughout the book; these shaded gray boxes contain interesting info that isn’t essential to your understanding of the subject at hand. The same goes for any text I mark with the Technical Stuff icon. If you need to type something, you see the text you need to type like this: Type this stuff . In this example, you type Type this stuff at the keyboard and then press Enter. An explanation usually follows, just in case you’re scratching your head and grunting, “Huh?” Within this book, you may note that some web addresses break across two lines of text. If you’re reading this book in print and want to visit one of these web pages, simply key in the web address exactly as it’s noted in the text, pretending as though the line break doesn’t exist. If you’re reading this as an e-book, you’ve got it easy — just click the web address to be taken directly to the web page. Foolish Assumptions Foolish Assumptions I’m making only two assumptions about who you are: You’re someone who works with a computer, and you either have a network or you’re thinking about getting one. I hope that you know (and are on speaking terms with) someone who knows more about computers than you do. My goal is to decrease your reliance on that person, but don’t throw away his phone number yet. Is this book useful for Macintosh users? Absolutely. Although the bulk of this book is devoted to showing you how to link Windows-based computers to form a network, you can find information about how to network Macintosh computers as well. Windows 10? Gotcha covered. You’ll find plenty of information about how to network with the latest and greatest Microsoft desktop operating system. Windows Server 2019? No worries. You’ll find plenty of information about the newest version of Microsoft’s server operating system.