802.11 Wireless Networks: The Definitive Guide

Front Cover
"O'Reilly Media, Inc.", 2002 - Technology & Engineering - 443 pages
10 Reviews

As a network administrator, architect, or security professional, you need to understand the capabilities, limitations, and risks associated with integrating wireless LAN technology into your current infrastructure. 802.11 Wireless Networks: The Definitive Guide provides all the information necessary to analyze and deploy wireless networks with confidence.

Over the past five years, the world has become increasingly mobile. Traditional ways of networking have altered to accommodate new lifestyles and ways of working. Wireless networks offer several advantages over fixed (or wired) networks, with mobility, flexibility, ease and speed of deployment, and low-cost at the top of the list. Large productivity gains are possible when developers, students, and professionals are able to access data on the move. Ad-hoc meetings in the lunch room, library, or across the street in the café allow you to develop ideas collaboratively and act on them right away. Wireless networks are typically very flexible, which can translate into rapid deployment. Once the infrastructure is in place, adding new users is just a matter of authorization.

After a general introduction to wireless networks, this practical book moves quickly into the gory details of the 802.11 standard. If you ever need to debug a wireless network that isn't working properly, you'd better understand this material. 802.11 MAC (Media Access Control), detailed 802.11 framing, WEP (Wired Equivalent Privacy protocol), 802.1x, management operations, and the PCF (point coordination function) are all covered in detail. Author Matthew Gast also supplies impressive detail on the physical layers.

As for getting a wireless network up and running... Gast offers clear, no-nonsense guide for using 802.11 on Windows and Linux, using and selecting access points, making deployment considerations, and seeing to 802.11 network monitoring and performance tuning. In the final section of the book, he summarizes the standardization work pending in the 802.11 working group.

If you're looking for one book that provides a full spectrum view of 802.11, from the minute details of the specification, to deployment, monitoring, and troubleshooting, 802.11 Wireless Networks: The Definitive Guide is worth its weight in gold.

  

What people are saying - Write a review

User ratings

5 stars
5
4 stars
2
3 stars
1
2 stars
1
1 star
1

LibraryThing Review

User Review  - sirfurboy - LibraryThing

This is a first rate book from O'Reilly. Plenty of depth, to the point that there will be little need to buy any other book on the subject. Here you will learn all about the physical layer, the 802.11 ... Read full review

LibraryThing Review

User Review  - name99 - LibraryThing

I was actually rather pleased with this. I bought it specifically to try to understand why the delivered throughput of 802.11g is so far from the headline bitrate (only about 50%) and it answered that ... Read full review

Selected pages

Contents

Introduction to Wireless Networks
1
A Network by Any Other Name
5
Overview of 80211 Networks
7
IEEE 802 Network Technology Family Tree
8
80211 Nomenclature and Design
9
80211 Network Operations
16
Mobility Support
20
The 80211 MAC
23
HRDSSS PHY
189
80211a 5GHz OFDM PHY
198
Orthogonal Frequency Division Multiplexing OFDM
199
OFDM as Applied by 80211a
205
OFDM PLCP
208
OFDM PMD
211
Characteristics of the OFDM PHY
212
Using 80211 on Windows
214

Challenges for the MAC
25
MAC Access Modes and Timing
27
ContentionBased Access Using the DCF
31
Fragmentation and Reassembly
34
Frame Format
35
Encapsulation of HigherLayer Protocols Within 80211
43
ContentionBased Data Service
44
80211 Framing in Detail
51
Control Frames
60
Management Frames
66
Frame Transmission and Association and Authentication States
83
Wired Equivalent Privacy WEP
86
WEP Cryptographic Operations
89
Problems with WEP
93
Conclusions and Recommendations
96
Security Take 28021x
99
The Extensible Authentication Protocol
100
Network Port Authentication
105
8021x on Wireless LANs
110
Management Operations
114
Scanning
115
Authentication
120
Association
124
Power Conservation
128
Timer Synchronization
137
ContentionFree Service with the PCF
140
Detailed PCF Framing
144
Power Management and the PCF
149
Physical Layer Overview
151
The Radio Link
152
RF and 80211
158
The ISM PHYs FH DS and HRDS
164
80211DS PHY
176
Nokia C110C111
215
Lucent ORINOCO
229
Using 80211 on Linux
236
A Few Words on 80211 Hardware
237
PCMCIA Support on Linux
238
linuxwlanng for IntersilBased Cards
244
Agere Lucent Orinoco
254
Using 80211 Access Points
262
ORiNOCO Lucent AP1000 Access Point
269
Nokia A032 Access Point
279
80211 Network Deployment
293
The Topology Archetype
294
Project Planning
307
The Site Survey
314
Installation and the Final Rollout
325
80211 Network Analysis
329
80211 Network Analyzers
331
Commercial Network Analyzers
332
80211 Network Analysis Examples
348
AirSnort
363
80211 Performance Tuning
368
Tuning Power Management
371
Timing Operations
373
Summary of Tunable Parameters
374
The Future at Least for 80211
376
The Longer Term
378
The End
382
80211 MIB
383
80211 on the Macintosh
396
Glossary
411
Index
419
Copyright

Common terms and phrases

References to this book

All Book Search results »

About the author (2002)

Matthew Gast currently works for an advanced wireless network systems company in the Bay Area. Prior to that, he spent several years as an engineer for a series of network security companies. He is the author of 802.11 Wireless Networks: The Definitive Guide, Network Printing, and T1: A Survival Guide.

Bibliographic information