Networking: A Beginner’s Guide

Acknowledgments......Page 17
Introduction......Page 18
Networking Ins and Outs......Page 20
1   The Business of Networking......Page 21
What Does the Company Need?......Page 22
How Will the Network Benefit the Company?......Page 23
Network Administrator......Page 24
Sarbanes-Oxley Act of 2002......Page 25
Chapter Summary......Page 27
2   Understanding Networking......Page 28
Bits, Nibbles, and Bytes......Page 29
Knowing Network Relationship Types......Page 32
Client/Server Network Relationships......Page 33
Comparing Peer-to-Peer and Client/Server Networks......Page 34
Printer Sharing......Page 37
E-mail......Page 38
Wide Area Networks......Page 39
Internet and Intranet......Page 40
Understanding the OSI Networking Model......Page 41
Physical Layer......Page 42
Transport Layer......Page 43
Understanding How Data Travels Through the OSI Layers......Page 44
Servers......Page 45
Hubs, Routers, and Switches......Page 46
Cabling and Cable Plants......Page 47
Chapter Summary......Page 48
3   Understanding Network Cabling......Page 50
Bus Topology......Page 51
Star Topology......Page 54
Ring Topology......Page 56
Comparing Rings to Stars and Buses......Page 57
Overview of Basic Cable Types......Page 59
Twisted-Pair Cabling: The King of Network Cables......Page 60
Coaxial Cable......Page 63
Choosing a Cabling Contractor......Page 65
Solving Cable Problems......Page 66
Chapter Summary......Page 68
4   Understanding Network Hardware......Page 69
Directing Network Traffic......Page 70
Hubs and Concentrators......Page 71
Switches......Page 73
Bridges......Page 74
Routers......Page 75
Gateways......Page 76
Protecting a Network with Firewalls......Page 77
Connecting RS-232 Devices with Short-Haul Modems......Page 78
Chapter Summary......Page 79
5   Making WAN Connections......Page 80
Analyzing Requirements......Page 81
Switched or Dedicated?......Page 82
Private or Public?......Page 83
Plain Old Telephone Service �⠀倀伀吀匀)......Page 84
Integrated Services Digital Network......Page 85
Digital Subscriber Line......Page 86
T-1/T-3 �⠀䐀匀㄀⼀䐀匀㌀) Connections......Page 87
WAN Components......Page 88
Quality of Service and Class of Service......Page 90
WAN Redundancy......Page 91
Chapter Summary......Page 93
6   Understanding Networking Protocols......Page 94
TCP and UDP Ports......Page 95
IP Packets and IP Addressing......Page 98
IP Subnetting......Page 100
Subnet Masks......Page 101
Domain Name System �⠀䐀一匀)......Page 103
Dynamic Host Configuration Protocol......Page 104
Hypertext Transfer Protocol......Page 105
Network News Transfer Protocol......Page 106
Simple Mail Transfer Protocol......Page 107
Voice over IP......Page 108
Comparing Important Proprietary Protocols......Page 109
NetBIOS and NetBEUI......Page 110
Chapter Summary......Page 111
7   Exploring Directory Services......Page 112
What Is a Directory Service?......Page 113
Forests, Roots, Trees, and Leaves......Page 114
Department of Redundancy Department......Page 115
Learning About Specific Directory Services......Page 116
Windows NT Domains......Page 117
Active Directory......Page 118
LDAP......Page 119
Chapter Summary......Page 120
8   Connections from Afar: Remote Network Access......Page 122
What Types of Remote Users Do You Need to Support?......Page 123
What Types of Remote Access Are Required?......Page 126
How Much Bandwidth Do You Need?......Page 127
Remote Node vs. Remote Control......Page 128
Virtual Private Networks......Page 129
Chapter Summary......Page 135
9   Securing Your Network......Page 137
Understanding Internal Security......Page 138
Account Security......Page 139
Password Security......Page 140
File and Directory Permissions......Page 142
Practices and User Education......Page 143
Understanding External Threats......Page 144
Front-Door Threats......Page 145
Back-Door Threats......Page 146
DoS Threats......Page 147
Viruses and Other Malicious Software......Page 148
Chapter Summary......Page 149
10 Network Disaster Recovery......Page 150
Notes from the Field: The City of Seattle......Page 151
Assessing Disaster Recovery Needs......Page 154
Considering Disaster Scenarios......Page 155
Handling Communications......Page 156
Planning Offsite Storage......Page 157
Assessing Backup Needs......Page 158
Acquiring Backup Media and Technologies......Page 159
Choosing Backup Strategies......Page 160
Chapter Summary......Page 163
11 Network Servers: Everything You Wanted to Know But Were Afraid to Ask......Page 165
Server Processors......Page 166
Bus Capabilities......Page 168
Disk Subsystems......Page 169
Hot-Swap Components......Page 175
Defining Server Needs......Page 176
Selecting the Server......Page 177
Installing Servers......Page 179
Maintaining and Troubleshooting Servers......Page 180
Chapter Summary......Page 182
12 Purchasing and Managing Client Computers......Page 183
Desktop Platforms......Page 184
Reliability and Serviceability......Page 186
Price and Performance......Page 188
Chapter Summary......Page 189
13 Designing a Network......Page 190
The Network Design Process......Page 191
Assessing Network Needs......Page 192
Applications......Page 193
Users......Page 194
Network Services......Page 195
Security and Safety......Page 196
Meeting Network Needs......Page 197
Structuring the Network......Page 198
Chapter Summary......Page 199
Hands-On Knowledge......Page 201
14 Installing and Setting Up Windows Server 2012......Page 202
Understanding Windows Server 2012 Editions......Page 203
Checking Hardware Compatibility......Page 204
Testing the Server Hardware......Page 205
Making Pre-installation Decisions......Page 206
Running the Windows Server 2012 Setup Program......Page 208
Performing the Initial Configuration......Page 213
Chapter Summary......Page 225
15 Administering Windows Server 2012: The Basics......Page 226
Thinking About Network Security......Page 227
Adding a User......Page 228
Modifying a User Account......Page 231
Deleting or Disabling a User Account......Page 235
Creating Groups......Page 236
Maintaining Group Membership......Page 240
Understanding Share Security......Page 241
Creating Shares......Page 242
Mapping Drives......Page 243
Understanding Network Printing......Page 244
Setting Up a Network Printer......Page 245
Chapter Summary......Page 247
16 Introducing Exchange Server 2013......Page 249
Installing Exchange Server 2013......Page 250
Setting Up Mailboxes......Page 256
Creating a Mailbox......Page 257
Testing Your Mailbox......Page 260
Chapter Summary......Page 262
17 Understanding Other Windows Server 2012 Services......Page 263
Exploring DHCP......Page 264
Investigating DNS......Page 265
Understanding Remote Access......Page 266
Understanding Remote Desktop Services......Page 268
Chapter Summary......Page 270
18 Installing Linux......Page 271
Hardware Compatibility......Page 272
Server Uptime......Page 273
Choosing an Installation Method......Page 274
Starting the Installation......Page 275
Initially Configuring Oracle Linux......Page 281
Logging In to Oracle Linux......Page 284
If It Just Won’t Work Right......Page 286
Chapter Summary......Page 287
19 Introduction to Linux Systems Administration......Page 288
Managing Users......Page 289
Changing Root’s Password......Page 292
Configuring Common Network Settings......Page 293
Mastering Linux Command-Line Basics......Page 294
Working from the Command Line......Page 295
Environment Variables......Page 296
Documentation Tools......Page 297
File Listings, Ownerships, and Permissions......Page 299
File Management and Manipulation......Page 304
Process Manipulation......Page 313
Miscellaneous Tools......Page 317
Chapter Summary......Page 318
20 Setting Up a Linux Web Server with Apache......Page 320
Activating Apache Web Server Under Oracle Linux......Page 321
Changing the Apache Configuration......Page 323
Chapter Summary......Page 324
21 Introduction to Virtualization......Page 325
Benefits of Virtualization......Page 326
Introducing VMware Virtualization Products......Page 327
Introducing Oracle VM VirtualBox......Page 328
Creating a Virtual Machine for Oracle Linux......Page 329
Running Oracle Linux in the Virtual Machine......Page 337
Backing Up Virtual Machine Data......Page 338
Chapter Summary......Page 339
Glossary......Page 340
Index......Page 351