Networking For Dummies®, 12th Edition

Title Page 5 Copyright Page 6 Table of Contents 9 Introduction 21 About This Book 21 Foolish Assumptions 22 Icons Used in This Book 23 Beyond the Book 23 Where to Go from Here 24 Part 1 Getting Started with Networking 25 Chapter 1 Let’s Network! 27 Defining a Network 28 Why Bother with a Network? 31 Sharing files 31 Sharing resources 31 Sharing programs 32 Sharing messages 32 Servers and Clients 33 Dedicated Servers and Peers 33 What Makes a Network Tick? 35 It’s Not a Personal Computer Anymore! 36 The Network Administrator 37 What Have They Got That You Don’t Got? 38 Chapter 2 Configuring Windows and Mac Clients 41 Configuring Windows Network Connections 42 Joining a Windows Computer to a Domain 47 Configuring Mac Network Settings 49 Joining a Mac Computer to a Domain 53 Chapter 3 Life on the Network 57 Distinguishing between Local Resources and Network Resources 58 What’s in a Name? 58 Logging on to the Network 60 Understanding Shared Folders 62 Four Good Uses for a Shared Folder 63 Store files that everybody needs 63 Store your own files 64 Make a temporary resting place for files on their way to other users 64 Back up your local hard drive 65 Oh, the Network Places You’ll Go 65 Mapping Network Drives 67 Using a Network Printer 70 Adding a network printer 71 Printing to a network printer 72 Playing with the print queue 73 Logging off the Network 75 Chapter 4 More Ways to Use Your Network 77 Sharing Your Stuff 77 Enabling File and Printer Sharing 78 Sharing a Folder 79 Using the Public Folder 81 Sharing a Printer 82 Using Microsoft Office on a Network 84 Accessing network files 84 Using workgroup templates 85 Networking an Access database 87 Working with Offline Files 88 Part 2 Designing Your Network 93 Chapter 5 Planning a Network 95 Making a Network Plan 95 Being Purposeful 96 Taking Stock 97 What you need to know 97 Programs that gather information for you 99 To Dedicate or Not to Dedicate: That Is the Question 100 File servers 101 Print servers 101 Web servers 102 Mail servers 102 Database servers 103 Application servers 103 License servers 103 Choosing a Server Operating System 103 Planning the Infrastructure 104 Drawing Diagrams 104 Chapter 6 Dealing with TCP/IP 107 Understanding Binary 108 Counting by ones 108 Doing the logic thing 109 Introducing IP Addresses 110 Networks and hosts 110 The dotted-decimal dance 111 Classifying IP Addresses 111 Class A addresses 112 Class B addresses 113 Class C addresses 113 Subnetting 114 Subnets 115 Subnet masks 116 The great subnet roundup 117 Private and public addresses 118 Understanding Network Address Translation 118 Configuring Your Network for DHCP 119 Understanding DHCP 120 DHCP servers 120 Understanding scopes 121 Feeling excluded? 122 Reservations suggested 123 How long to lease? 124 Managing a Windows Server 2019 DHCP Server 124 Configuring a Windows DHCP Client 125 Using DNS 126 Domains and domain names 126 Fully qualified domain names 128 Working with the Windows DNS Server 129 Configuring a Windows DNS Client 130 Chapter 7 Oh, What a Tangled Web We Weave: Cables and Switches 131 What Is Ethernet? 132 All about Cable 134 Cable categories 136 What’s with the pairs? 137 To shield or not to shield 137 When to use plenum cable 138 Sometimes solid, sometimes stranded 138 Installation guidelines 139 The tools you need 140 Pinouts for twisted-pair cables 141 RJ-45 connectors 142 Crossover cables 144 Wall jacks and patch panels 144 Understanding Switches 146 Comparing managed and unmanaged switches 146 Daisy-chaining switches 148 Stacking switches 148 Looking at distribution switches and access switches 149 Powering Up with Power over Ethernet 150 Looking at Three Types of Network Rooms 151 Chapter 8 Setting Up a Wireless Network 153 Diving into Wireless Networking 154 A Little High School Electronics 155 Waves and frequencies 155 Wavelength and antennas 157 Spectrums and the FCC 157 Eight-Oh-Two-Dot-Eleventy Something: Understanding Wireless Standards 159 Home on the Range 160 Using Wireless Network Adapters 161 Setting Wireless Access Points 162 Infrastructure mode 162 Multifunction WAPs 163 Roaming Capabilities 164 Wireless bridging 164 Ad-hoc networks 165 Configuring a Wireless Access Point 165 Basic configuration options 166 DHCP configuration 166 Connecting to a Wireless Network 167 Paying Attention to Wireless Network Security 169 Chapter 9 Connecting to the Internet 175 Connecting to the Internet 175 Connecting with cable or DSL 176 Connecting with high-speed private lines 177 Sharing an Internet connection 178 Securing Your Connection with a Firewall 179 Using a firewall 179 Comparing residential gateways to firewall routers 181 Looking at the built-in Windows firewall 181 Providing a Backup Internet Connection 183 Part 3 Working with Servers 185 Chapter 10 Virtualizing Your Network 187 Understanding Virtualization 187 Understanding Hypervisors 189 Understanding Virtual Disks 191 Understanding Network Virtualization 193 Looking at the Benefits of Virtualization 194 Choosing Virtualization Hosts 196 Understanding Windows Server 2019 Licensing 196 Introducing Hyper-V 198 Understanding the Hyper-V hypervisor 198 Understanding virtual disks 199 Enabling Hyper-V 200 Getting Familiar with Hyper-V 201 Creating a Virtual Switch 202 Creating a Virtual Disk 204 Creating a Virtual Machine 208 Installing an Operating System 212 Chapter 11 Setting Up a Windows Server 215 Planning a Windows Server Installation 216 Checking system requirements 216 Reading the release notes 216 Considering your licensing options 216 Deciding your TCP/IP configuration 217 Choosing workgroups or domains 217 Running Setup 218 Adding Server Roles and Features 223 Creating a New Domain 228 Chapter 12 Managing Windows User Accounts 233 Understanding How Active Directory Is Organized 234 Objects 234 Domains 235 Organizational units 235 Trees 236 Forests 236 Understanding Windows User Accounts 236 Local accounts versus domain accounts 236 User account properties 237 Creating a New User 237 Setting User Properties 240 Changing the user’s contact information 240 Setting account options 241 Specifying logon hours 243 Restricting access to certain computers 243 Setting the user’s profile information 244 Resetting User Passwords 245 Disabling and Enabling User Accounts 246 Deleting a User 246 Working with Groups 247 Creating a group 247 Adding a member to a group 248 Creating a Logon Script 250 Chapter 13 Managing Network Storage 251 Understanding Disk Storage 251 Hard disk drives 251 Solid state drives to the rescue! 254 It’s a RAID! 254 Three ways to attach disks to your servers 256 Focusing on File Servers 257 Understanding permissions 257 Understanding shares 259 Managing Your File Server 260 Using the New Share Wizard 261 Sharing a folder without the wizard 265 Granting permissions 267 Part 4 Managing Your Network 271 Chapter 14 Welcome to Network Management 273 What a Network Administrator Does 274 Choosing the Part-Time Administrator 275 The Three “Ups” of Network Management 276 Managing Network Users 277 Acquiring Software Tools for Network Administrators 278 Building a Library 279 Pursuing Certification 280 Helpful Bluffs and Excuses 281 Chapter 15 Supporting Your Users 283 Establishing the Help Desk’s Charter 284 Tracking Support Tickets 285 Deciding How to Communicate with Users 287 Using Remote Assistance 288 Enabling Remote Assistance 289 Inviting someone to help you via a Remote Assistance session 290 Responding to a Remote Assistance invitation 293 Creating a Knowledge Base 295 Creating a Self-Service Help Portal 295 Using Satisfaction Surveys 296 Tracking Help Desk Performance 298 Using Help Desk Management Software 299 Chapter 16 Using Group Policy 301 Understanding Group Policy 301 Enabling Group Policy Management on Windows Server 2019 302 Creating Group Policy Objects 303 Filtering Group Policy Objects 309 Forcing Group Policy Updates 312 Chapter 17 Managing Software Deployment 313 Understanding Software Licenses 314 Using a License Server 317 Deploying Network Software 318 Deploying software manually 318 Running Setup from a network share 319 Installing silently 320 Creating an administrative installation image 321 Pushing out software with Group Policy 322 Keeping Software Up to Date 322 Chapter 18 Managing Mobile Devices 325 The Many Types of Mobile Devices 326 Considering Security for Mobile Devices 327 Managing iOS Devices 328 Understanding the iPhone 328 Understanding the iPad 329 Integrating iOS devices with Exchange 329 Configuring an iOS device for Exchange email 331 Managing Android Devices 334 Looking at the Android OS 334 Perusing Android’s core applications 335 Integrating Android with Exchange 336 Part 5 Securing Your Network 337 Chapter 19 Welcome to Cybersecurity Network 339 Do You Need Security? 340 The Three Pillars of Cybersecurity 341 Two Approaches to Security 342 Physical Security: Locking Your Doors 343 Securing User Accounts 344 Obfuscating your usernames 344 Using passwords wisely 345 Generating passwords For Dummies 346 Secure the Administrator account 348 Managing User Security 348 User accounts 349 Built-in accounts 350 User rights 351 Permissions (who gets what) 351 Group therapy 352 User profiles 353 Logon scripts 354 Securing the Human Firewall 354 Chapter 20 Hardening Your Network 357 Firewalls 357 The Many Types of Firewalls 359 Packet filtering 359 Stateful packet inspection (SPI) 361 Circuit-level gateway 362 Application gateway 362 Next-generation firewall 363 Virus Protection 363 What is a virus? 363 Antivirus programs 365 Safe computing 366 Patching Things Up 366 Chapter 21 Securing Your Email 369 Defining Spam 370 Sampling the Many Flavors of Spam 371 Using Antispam Software 372 Understanding Spam Filters 373 Looking at Three Types of Antispam Software 376 On-premises antispam 376 Antispam appliances 377 Cloud-based antispam services 378 Minimizing Spam 379 Chapter 22 Backing Up Your Data 381 3-2-1: The Golden Rule of Backups 381 How Often Should You Back Up Your Data? 383 Choosing Where to Back Up Your Data 384 Establishing Two Key Backup Objectives 385 Backing Up to Tape 386 Understanding Backup Software 387 Examining File-Based Backups 388 Full backups 389 Copy backups 390 Incremental backups 390 Differential backups 391 Backup and Virtualization 391 Verifying Tape Reliability 393 Keeping Backup Equipment Clean and Reliable 394 Setting Backup Security 395 Chapter 23 Planning for Disaster 397 Assessing Different Types of Disasters 398 Environmental disasters 399 Deliberate disasters 399 Disruption of services 400 Equipment failure 400 Other disasters 401 Analyzing the Impact of a Disaster 401 Developing a Business Continuity Plan 402 Holding a Fire Drill 403 Part 6 More Ways to Network 405 Chapter 24 Accommodating Remote Users 407 Using Outlook Web App 408 Using a Virtual Private Network 409 Looking at VPN security 410 Understanding VPN servers and clients 411 Connecting with Remote Desktop Connection 413 Enabling Remote Desktop Connection 414 Connecting remotely 415 Using keyboard shortcuts for Remote Desktop 417 Chapter 25 Life in Cloud City 419 Introducing Cloud Computing 420 Looking at the Benefits of Cloud Computing 421 Detailing the Drawbacks of Cloud Computing 422 Examining Three Basic Kinds of Cloud Services 423 Applications 424 Platforms 424 Infrastructure 425 Public Clouds versus Private Clouds 425 Introducing Some of the Major Cloud Providers 426 Amazon 426 Google 427 Microsoft 427 Getting into the Cloud 428 Chapter 26 Going Hybrid 429 What Is a Hybrid Cloud? 429 What Are the Benefits of Hybrid Cloud? 431 Elasticity 431 Flexibility 432 Agility 432 Innovation 432 Operational efficiency 432 Integrating Identity 433 Azure Active Directory 433 Single sign-on 434 Looking at Hybrid Cloud Virtualization Platforms 436 Part 7 The Part of Tens 439 Chapter 27 Ten Networking Commandments 441 I. Thou Shalt Back Up Thy Data Religiously 441 II. Thou Shalt Protect Thy Network from Infidels 442 III. Thou Shalt Train Up Thy Users in the Ways of Safe Computing 442 IV. Thou Shalt Keepeth Thy Network Drive Pure and Cleanse It of Old Files 443 V. Thou Shalt Not Tinker with Thine Network Configuration unless Thou Knowest What Thou Art Doing 443 VI. Thou Shalt Not Covet Thy Neighbor’s Network 443 VII. Thou Shalt Not Take Down Thy Network without Proper Notification 444 VIII. Thou Shalt Keep an Adequate Supply of Spare Parts 444 IX. Thou Shalt Not Steal Thy Neighbor’s Program without a License 444 X. Thou Shalt Write Down Thy Network Configuration upon Tablets of Stone 445 Chapter 28 Ten Big Network Mistakes 447 Skimping on Hardware 447 Turning Off or Restarting a Server Computer While Users Are Logged On 448 Deleting Important Files on the Server 449 Copying a File from the Server, Changing It, and Then Copying It Back 449 Sending Something to the Printer Again Just Because It Didn’t Print the First Time 450 Assuming That the Server Is Safely Backed Up 450 Connecting to the Internet without Considering Security Issues 450 Plugging in a Wireless Access Point without Asking 451 Thinking You Can’t Work Just Because the Network Is Down 451 Running Out of Space on a Server 452 Always Blaming the Network 453 Chapter 29 Ten Things You Should Keep in Your Closet 455 Duct Tape 455 Tools 456 Patch Cables 456 Cable Ties and Velcro 456 Twinkies 457 Replacement Parts 457 Cheap Network Switches 458 The Complete Documentation of the Network on Tablets of Stone 458 The Network Manuals and Disks 458 Ten Copies of This Book 459 Index 461 EULA 483 The #1 bestselling beginner's guide to computer networking'now in a new edition Need networking know-how, but don't know where to turn' Run'don't walk'to the no-nonsense networking guidance offered in this friendly guide! Whether you're a networking administrator or an everyday computer user looking to set up a network in your home or office, Networking For Dummies seamlessly gets you connected with the basics and gives you the knowledge to work out whatever kinks may come your way'in no time. A network can make everything in your home or office run more smoothly and easily, but setting one up can be challenging for even the most computer-savvy people. Well, relax'this bestselling guide has you covered! Inside, you'll find step-by-step instructions on setting up and maintaining a network, working with broadband and wireless technologies, ensuring you're following best practices with storage and back-up procedures, building a wired or wireless network, and much more. -Set up a network for all major operating systems -Secure, optimize, and troubleshoot your network -Create an intranet and use the Cloud safely -Make sense of the latest updates to Windows 10 Don't let a thorny networking issue get the best of you! Heed the simple guidance in this friendly guide and effectively network your way to more effective shared data and resources

Set up a secure network at home or the office

Fully revised to cover Windows 10 and Windows Server 2019, this new edition of the trusted Networking For Dummies helps both beginning network administrators and home users to set up and maintain a network. Updated coverage of broadband and wireless technologies, as well as storage and back-up procedures, ensures that you'll learn how to build a wired or wireless network, secure and optimize it, troubleshoot problems, and much more.

From connecting to the Internet and setting up a wireless network to solving networking problems and backing up your data—this #1 bestselling guide covers it all.

• Build a wired or wireless network
• Secure and optimize your network
• Set up a server and manage Windows user accounts
• Use the cloud—safely

Written by a seasoned technology author—and jam-packed with tons of helpful step-by-step instructions—this is the book network administrators and everyday computer users will turn to again and again.

Set up a secure network at home or the office Fully revised to cover Windows 10 and Windows Server 2019, this new edition of the trusted Networking For Dummies helps both beginning network administrators and home users to set up and maintain a network. Updated coverage of broadband and wireless technologies, as well as storage and back-up procedures, ensures that you'll learn how to build a wired or wireless network, secure and optimize it, troubleshoot problems, and much more. From connecting to the Internet and setting up a wireless network to solving networking problems and backing up your data—this #1 bestselling guide covers it all. Build a wired or wireless network Secure and optimize your network Set up a server and manage Windows user accounts Use the cloud—safely Written by a seasoned technology author—and jam-packed with tons of helpful step-by-step instructions—this is the book network administrators and everyday computer users will turn to again and again.