802.11 Wireless Networks: The Definitive Guide: The Definitive GuideAs we all know by now, wireless networks offer many advantages over fixed (or wired) networks. Foremost on that list is mobility, since going wireless frees you from the tether of an Ethernet cable at a desk. But that's just the tip of the cable-free iceberg. Wireless networks are also more flexible, faster and easier for you to use, and more affordable to deploy and maintain.The de facto standard for wireless networking is the 802.11 protocol, which includes Wi-Fi (the wireless standard known as 802.11b) and its faster cousin, 802.11g. With easy-to-install 802.11 network hardware available everywhere you turn, the choice seems simple, and many people dive into wireless computing with less thought and planning than they'd give to a wired network. But it's wise to be familiar with both the capabilities and risks associated with the 802.11 protocols. And 802.11 Wireless Networks: The Definitive Guide, 2nd Edition is the perfect place to start.This updated edition covers everything you'll ever need to know about wireless technology. Designed with the system administrator or serious home user in mind, it's a no-nonsense guide for setting up 802.11 on Windows and Linux. Among the wide range of topics covered are discussions on:
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From inside the book
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... bands of volunteers in most major cities have started to build public wireless networks based on 802.11. 802.11 has become something of a universally assumed connectivity method as well. Rather than wiring public access ports up with ...
... band shared by 802.11b. It has largely supplanted 802.11b, and is a common option for built-in connectivity with new notebook computers. The PHY itself is almost identical to the 802.11a PHY. The differences are in allowing for ...
... band. Each band has an associated bandwidth, which is simply the amount of frequency space in the band. Bandwidth has acquired a connotation of being a measure of the data capacity of a link. A great deal of mathematics, information ...
... bands, which are simply ranges of frequencies available to specified applications. Table 1-1 lists some common frequency bands used in the U.S.* Table 1-1. Common U.S. frequency bands Band Frequency range UHF. * The full spectrum ...
... bands Band Frequency range UHF ISM 902–928 MHz S-Band 2–4 GHz S-Band ISM 2.4–2.5 GHz C-Band 4–8 GHz C-Band satellite downlink 3.7–4.2 GHz C-Band Radar (weather) 5.25–5.925 GHz C-Band ISM 5.725–5.875 GHz C-Band satellite uplink 5.925–6.425 ...
Contents
1 | |
12 | |
32 | |
67 | |
Wired Equivalent Privacy WEP | 114 |
User Authentication with 8021X | 129 |
Robust Security Networks TKIP and CCMP | 149 |
Management Operations | 170 |
80211 Hardware | 343 |
Using 80211 on Windows | 353 |
80211 on the Macintosh | 373 |
Using 80211 on Linux | 387 |
Using 80211 Access Points | 415 |
Logical Wireless Network Architecture | 438 |
Security Architecture | 476 |
Site Planning and Project Management | 518 |
ContentionFree Service with the PCF | 214 |
Physical Layer Overview | 225 |
The FrequencyHopping FH PHY | 241 |
DSSS and HRDSSS 80211b | 253 |
5GHz OFDM PHY | 276 |
The ExtendedRate PHY ERP | 298 |
MIMOOFDM | 311 |
80211 Network Analysis | 553 |
80211 Performance Tuning | 573 |
Conclusions and Predictions | 585 |
Glossary | 597 |
Index | 598 |