1. Chapter 1 Introduction to Wireless Networking

   1. Why Wireless?

   2. What Makes Wireless Networks Different

   3. A Network by Any Other Name...

2. Chapter 2 Overview of 802.11 Networks

   1. IEEE 802 Network Technology Family Tree

   2. 802.11 Nomenclature and Design

   3. 802.11 Network Operations

   4. Mobility Support

3. Chapter 3 802.11 MAC Fundamentals

   1. Challenges for the MAC

   2. MAC Access Modes and Timing

   3. Contention-Based Access Using the DCF

   4. Fragmentation and Reassembly

   5. Frame Format

   6. Encapsulation of Higher-Layer Protocols Within 802.11

   7. Contention-Based Data Service

   8. Frame Processing and Bridging

4. Chapter 4 802.11 Framing in Detail

   1. Data Frames

   2. Control Frames

   3. Management Frames

   4. Frame Transmission and Association and Authentication States

5. Chapter 5 Wired Equivalent Privacy (WEP)

   1. Cryptographic Background to WEP

   2. WEP Cryptographic Operations

   3. Problems with WEP

   4. Dynamic WEP

6. Chapter 6 User Authentication with 802.1X

   1. The Extensible Authentication Protocol

   2. EAP Methods

   3. 802.1X: Network Port Authentication

   4. 802.1X on Wireless LANs

7. Chapter 7 802.11i: Robust Security Networks, TKIP, and CCMP

   1. The Temporal Key Integrity Protocol (TKIP)

   2. Counter Mode with CBC-MAC (CCMP)

   3. Robust Security Network (RSN) Operations

8. Chapter 8 Management Operations

   1. Management Architecture

   2. Scanning

   3. Authentication

   4. Preauthentication

   5. Association

   6. Power Conservation

   7. Timer Synchronization

   8. Spectrum Management

9. Chapter 9 Contention-Free Service with the PCF

   1. Contention-Free Access Using the PCF

   2. Detailed PCF Framing

   3. Power Management and the PCF

10. Chapter 10 Physical Layer Overview

    1. Physical-Layer Architecture

    2. The Radio Link

    3. RF Propagation with 802.11

    4. RF Engineering for 802.11

11. Chapter 11 The Frequency-Hopping (FH) PHY

    1. Frequency-Hopping Transmission

    2. Gaussian Frequency Shift Keying (GFSK)

    3. FH PHY Convergence Procedure (PLCP)

    4. Frequency-Hopping PMD Sublayer

    5. Characteristics of the FH PHY

12. Chapter 12 The Direct Sequence PHYs: DSSS and HR/DSSS (802.11b)

    1. Direct Sequence Transmission

    2. Differential Phase Shift Keying (DPSK)

    3. The "Original" Direct Sequence PHY

    4. Complementary Code Keying

    5. High Rate Direct Sequence PHY

13. Chapter 13 802.11a and 802.11j: 5-GHz OFDM PHY

    1. Orthogonal Frequency Division Multiplexing (OFDM)

    2. OFDM as Applied by 802.11a

    3. OFDM PLCP

    4. OFDM PMD

    5. Characteristics of the OFDM PHY

14. Chapter 14 802.11g: The Extended-Rate PHY (ERP)

    1. 802.11g Components

    2. ERP Physical Layer Convergence (PLCP)

    3. ERP Physical Medium Dependent (PMD) Layer

15. Chapter 15 A Peek Ahead at 802.11n: MIMO-OFDM

    1. Common Features

    2. WWiSE

    3. TGnSync

    4. Comparison and Conclusions

16. Chapter 16 802.11 Hardware

    1. General Structure of an 802.11 Interface

    2. Implementation-Specific Behavior

    3. Reading the Specification Sheet

17. Chapter 17 Using 802.11 on Windows

    1. Windows XP

    2. Windows 2000

    3. Windows Computer Authentication

18. Chapter 18 802.11 on the Macintosh

    1. The AirPort Extreme Card

    2. 802.1X on the AirPort

19. Chapter 19 Using 802.11 on Linux

    1. PCMCIA Support on Linux

    2. Linux Wireless Extensions and Tools

    3. Agere (Lucent) Orinoco

    4. Atheros-Based cards and MADwifi

    5. 802.1X on Linux with xsupplicant

20. Chapter 20 Using 802.11 Access Points

    1. General Functions of an Access Point

    2. Power over Ethernet (PoE)

    3. Selecting Access Points

    4. Cisco 1200 Access Point

    5. Apple AirPort

21. Chapter 21 Logical Wireless Network Architecture

    1. Evaluating a Logical Architecture

    2. Topology Examples

    3. Choosing Your Logical Architecture

22. Chapter 22 Security Architecture

    1. Security Definition and Analysis

    2. Authentication and Access Control

    3. Ensuring Secrecy Through Encryption

    4. Selecting Security Protocols

    5. Rogue Access Points

23. Chapter 23 Site Planning and Project Management

    1. Project Planning and Requirements

    2. Network Requirements

    3. Physical Layer Selection and Design

    4. Planning Access-Point Placement

    5. Using Antennas to Tailor Coverage

24. Chapter 24 802.11 Network Analysis

    1. Network Analyzers

    2. Ethereal

    3. 802.11 Network Analysis Checklist

    4. Other Tools

25. Chapter 25 802.11 Performance Tuning

    1. 802.11 Performance Calculations

    2. Improving Performance

    3. Tunable 802.11 Parameters

26. Chapter 26 Conclusions and Predictions

    1. Standards Work

    2. Current Trends in Wireless Networking

    3. The End

1. glossary

Our look is the result of reader comments, our own experimentation, and feedback from distribution channels. Distinctive covers complement our distinctive approach to technical topics, breathing personality and life into potentially dry subjects. The animal on the cover of 802.11 Wireless Networks: The Definitive Guide, Second Edition, is a horseshoe bat (Rhinolophus hipposideros). This rare and globally endangered species is the smallest of the European horseshoe bats; they typically weigh only 4 to 10 grams and have a wingspan of 19 to 25 centimeters. Horseshoe bats get their name from the horseshoe-shaped, leaflike plate of skin around their noses. This nose-leaf helps modify and direct the ultrasonic sounds they emit through their nostrils (a method of sensory perception known as echolocation) to orient themselves to their surroundings, detect obstacles, communicate with each other, and find food. Bats' echolocation systems are so accurate that they can detect insects the size of gnats and objects as fine as a human hair.

Lesser horseshoe bats are found in a variety of habitats, ranging from the British Isles to the Arabian Peninsula and Central Asia, and from Morocco to Sudan. The lesser horseshoe bat was originally a cave-roosting bat, but many summer maternity colonies now occupy the roofs of old rural houses and farm buildings. These bats also sometimes roost in hedgerows and hollow trees. Maternity colonies of 30 to 70 are normal, but roosting mothers have been known to form colonies of as many as 200 bats. Lesser horseshoe bats hibernate, sometimes in large groups, from October until late April or early May. Their winter roosts are usually underground, in caves or tunnels. They hang by their feet with their wings wrapped around their bodies, often in open and exposed positions but rarely in large clusters. Colleen Gorman was the production editor and the proofreader for 802.11 Wireless Networks: The Definitive Guide, Second Edition. Emily Quill and Claire Cloutier provided quality control. Abigail Fox provided production assistance. Johnna VanHoose Dinse wrote the index.

Ellie Volckhausen designed the cover of this book, based on a series design by Edie Freedman. The cover image is a 19th-century engraving from the Dover Pictorial Archive. Karen Montgomery produced the cover layout with Adobe InDesign CS using Adobe's ITC Garamond font.

David Futato designed the interior layout. This book was converted by Judy Hoer to FrameMaker 5.5.6 with a format conversion tool created by Erik Ray, Jason McIntosh, Neil Walls, and Mike Sierra that uses Perl and XML technologies. The text font is Linotype Birka; the heading font is Adobe Myriad Condensed; and the code font is LucasFont's TheSans Mono Condensed. The illustrations that appear in the book were produced by Robert Romano, Jessamyn Read, and Lesley Borash using Macromedia FreeHand MX and Adobe Photoshop CS. The tip and warning icons were drawn by Christopher Bing. This colophon was written by Rachel Wheeler.