Wireless Network Administration A Beginner's Guide


Learn the essentials of wireless networking

Configure, manage, and secure wireless networks using the step-by-step details in this practical resource. Wireless Network Administration: A Beginner's Guide shows you how to work with the latest wireless networking standards, including the 802.11x family, on Windows, Mac, and Linux platforms. The book covers wireless network planning, design, hardware, services, protocols, device configuration, security, troubleshooting, and more. ...

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Wireless Network Administration A Beginner's Guide

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Learn the essentials of wireless networking

Configure, manage, and secure wireless networks using the step-by-step details in this practical resource. Wireless Network Administration: A Beginner's Guide shows you how to work with the latest wireless networking standards, including the 802.11x family, on Windows, Mac, and Linux platforms. The book covers wireless network planning, design, hardware, services, protocols, device configuration, security, troubleshooting, and more. This hands-on guide will get you started administering wireless networks in no time.

  • Get details on regulatory and technical organizations
  • Learn about different wireless standards and the basics of RF technologies
  • Understand and determine client-side hardware requirements, including chipsets and various wireless interfaces
  • Select infrastructure-side wireless hardware, such as antennas, wireless access points (WAPs), residential gateways, switches/controllers, routers, and bridges
  • Learn about WLANs, WWANs, WMANs, and WPANs
  • Work with standard wireless network protocols—TCP/IP (IPv4 and IPv6)
  • Understand DNS, DHCP, and other supporting infrastructure services
  • Secure wireless networks using cryptography
  • Configure infrastructure devices, including a wireless access point device and wireless network switches and controllers
  • Configure and manage wireless Microsoft Windows, Mac OS X, and Linux clients
  • Plan, design, survey, deploy, and troubleshoot your wireless network
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Product Details

  • ISBN-13: 9780071639217
  • Publisher: McGraw-Hill Professional Publishing
  • Publication date: 7/19/2010
  • Edition number: 1
  • Pages: 336
  • Sales rank: 990,338
  • Product dimensions: 7.30 (w) x 9.00 (h) x 0.60 (d)

Meet the Author

Wale Soyinka is an IT systems network/security consultant with many years of experience in the field. He helps businesses secure and integrate wireless networks in the enterprise. Wale is the author of Linux Administration: A Beginner's Guide, now in its fifth edition.

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Table of Contents



Part I Overview

1 Regulatory and Technical Organizations 3

Regulatory Organizations 5

The ITU-R 7

Federal Communications Commission (FCC) 8

Office of Communications (Ofcom) 9

Australian Communications and Media Authority (ACMA) 9

Telecom Regulatory Authority of India (TRAI) 9

Canadian Radio-television and Telecommunications Commission (CRTC) 10

Technical Organizations 10

Institute of Electrical and Electronics Engineers (IEEE) 10

Internet Engineering Task Force (IETF) 12

European Telecommunications Standards Institute (ETSI) 13

Wi-Fi Alliance 13

Summary 14

2 Wireless Communication Building Blocks 15

Waves 16

Frequency 17

Wavelength 18

Amplitude 19

Phase 19

Bands 21

Channels 22

Modulation 22

Spread-Spectrum Modulation Techniques 23

Digital Modulation Techniques 24

Analog Modulation Techniques 26

Summary 27

3 Wireless Standards 29

Standards 30

IEEE 802.3 31

IEEE 802 31

IEEE 802.11 31

IEEE 802.11b 32

IEEE 802.11a 33

IEEE 802.11g 33

IEEE 802.11n 34

IEEE 802.11y 35

IEEE 802.11k 35

IEEE 802.11i 35

IEEE 802.15 36

Summary 36

Part II Hardware

4 Wireless Hardware: Client Side 39

Chipset 40

Components of a Wireless Chipset 41

Chipset Makers 42

Client-Side Wireless Hardware 43

PCI 44

Mini PCI 45

PCI Express Mini 45

PC Card 46

ExpressCard 48

USB 49

CompactFlash Cards and SDIO Cards 50

Miscellaneous Converters 51

Other Considerations for Choosing Wireless Hardware 51

Transmit Power (Tx Power) 52

Receiver Sensitivity (Rx) 52

Summary 52

5 Wireless Hardware: Infrastructure Side 53

Antenna (Aerial) 54

Antenna Concepts 55

Antenna Types 59

Other Antenna Considerations 61

Wireless Access Point 62

WAP Operational Nodes 63

When to Use a WAP 65

Wireless Switches and Controllers 65

Wireless Controller Considerations 66

Wireless Routers: SOHO and Residential Wireless Gateways 67

Wireless Bridge 68

Power over Ethernet 69

Additional Considerations 69

Cost 70

Interoperability 70

Summary 70


6 WLAN 73

WLAN Components and Concepts 74

Wireless Medium 74

Wireless Station 74

Distribution System 75

Access Point 76

Basic Service Set 76

Service Set ID 78

Basic Service Set ID 78

Basic Service Area 79

Extended Service Set 79

WLAN Standard (IEEE 802.11) 79

PHY 79

MAC 82

Complete MAC Frame 85

Summary 88

7 WWANs, WMANs, and WPANs 89

Wireless Wide Area Networks 90

GSM Overview 90

UMTS Overview 94

LTE Overview 95

Wireless Metropolitan Area Networks 96

WiMAX Overview 96

Wireless Personal Area Networks 97

Bluetooth Overview 98

ZigBee Overview 101

Summary 104

Part IV Protocols, Services, and Security in Wireless Networks

8 Wireless Network Services and Protocols: TCP/IP 107

TCP/IP and UDP 108

Internet Protocol 108

Transmission Control Protocol 111

User Datagram Protocol 115

IP-Based Networks 116

Hosts and Networks 116

Subnetting 117

Netmasks 117

IPv6 119

IPv6 Address Format 119

IPv6 Address Types 120

IPv6 Backward-Compatibility 121

Summary 121

9 Standard Wireless Network Infrastructure Services and Protocols: DNS, DHCP 123

Domain Name System 124

Domain and Host Naming Conventions 124

The in-addr.arpa Domain 128

Types of DNS Servers 128

DNS Record Types 131

DHCP 136

The Mechanics of DHCP 136

DHCP Server 137

DHCP Client 137

DHCP Relay 137

Summary 139

10 Optional Infrastructure Services and Protocols 141


RADIUS Entities 142

AAA 144

When to Use RADIUS 146

Popular RADIUS Implementations 147

Diameter 147

Diameter Entities 148

Proxy Server 148

Types of Proxy Servers 149

When to Use a Proxy Server 150

Popular Proxy Server Implementations 150

Summary 150

11 Securing Wireless Networks: Fundamentals 151

Security Background 152

Security Services 154

Cryptographic Concepts and Terms 154

Plain-text 154

Encryption and Decryption 155

Key 155

Algorithm 157

Cipher 158

Cipher Implementations 163

Wired Equivalent Privacy Protocol 163

Wi-Fi Protected Access 164

Wi-Fi Protected Access 2 (WPA2) 165

EAP 168

EAP Entities 169

EAP Grammar 169

EAP Types 170

IEEE 802.11i 172

Four-Way Handshake 173

IEEE 802.11i Considerations 173

Summary 175

Part V Wireless Devices Configuration and Other Wireless Network Considerations

12 Infrastructure Device Configuration 179

The Wireless Access Point 181

Configuring the WAP 182

The WLAN Controller 186

Configuring the WLAN Controller 187

Summary 194

13 Microsoft Windows Clients 197

Windows Client Configuration 198

Setting Up the Hardware 199

Setting Up a Wireless Profile 201

Manually Connecting to a Wireless Network 205

netsh Utility 206

Wireless Network Configuration Cloning with netsh 207

Wireless Odds and Ends in Windows 7 209

Virtual WiFi and Software Access Point 209

Internet Connection Sharing 210

Summary 216

14 Apple OS X Clients 217

Macintosh System Design 218

Macintosh Software 218

Macintosh Hardware 218

Mac OS X Wireless Client Configuration 220

Setting Up the Hardware 220

Setting Up a Wireless Location 221

Wireless Odds and Ends in OS X 226

Internet Sharing 226

Ad-Hoc Networks 229

Bluetooth Dial-up Network 231

Summary 234

15 Linux Clients 235

Wireless Hardware on Linux Platforms 237

Linux Wireless Drivers 237

Linux Wireless API 237

Common Linux Wireless Drivers 239

Wireless Network Management Tools 242

NetworkManager 242

Wireless Interface Connection Daemon 243

ConnMan 243

Good Ol' CLI 243

Ubuntu Wireless Client Configuration: nm 249

Generic Linux Wireless Client Configuration: CLI 254

PHY and MAC Layer Configuration: CLI 254

Network and Transport Configuration: CLI 257

Wireless Odds and Ends in FOSS/Linux 261

Ad-Hoc Networks 262

Summary 265

16 Plan, Design, Survey, and Deploy 267

Wireless Network Planning and Designing Considerations 268

Past, Present, and Future Hardware 268

Interoperability and Incompatibility Issues 269

DataThroughput 270

Network Reliability 270

Estimating Hardware Requirements 270

SiteSurvey 271

Site Survey Metrics 271

SiteSurvey Tools 272

The Actual Site Survey 274

Wireless Site Deployment Examples and Considerations 277

Hospitals 278

Airports 278

Retail Environments 278

High Security Areas 279

Home Environments 280

Summary 281

Appendix: A Troubleshooting Wireless Networks 283

Troubleshooting Regulatory and Technical Organization Issues 285

Troubleshooting Client-Side Hardware Issues 285

Troubleshooting Infrastructure-Side Hardware Issues 286

Troubleshooting Issues with the Wireless Building Blocks 286

Problems with Establishing Wireless Connections 289

Scanning 289

Selection 290

Authentication 291

Association 292

TCP/IP Configuration 292

Problems with Infrastructure Services and Protocols: TCP/IP, DNS, and DHCP Issues 293

Troubleshooting Networking Issues on Different OSs 294

Summary 304

Index 305

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