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:
|
From inside the book
Results 1-5 of 92
... Data Frames 67 Control Frames 76 Management Frames 82 Frame Transmission and Association and Authentication States 111 5. Wired Equivalent Privacy (WEP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114 ...
... data encapsulation in 802.11 frames and helps network administrators understand the frame sequences used to transfer data. Chapter 4, 802.11 Framing in Detail, builds on the end of Chapter 3 by describing the various frame types and ...
... frames must be acknowledged, as shown in Figure 3-1. If any part of the transfer fails, the frame is considered lost. Frame Time ACK Figure 3-1. Positive acknowledgment of data transmissions The sequence in Figure 3-1 is an atomic ...
... data at a higher speed. Signal quality degrades with range, which means that the data transmission speed of an ... frame transaction, so that the RTS frame, CTS frame, the ChallengesfortheMAC | 35 data frame, and the final acknowledgment ...
The Definitive Guide Matthew S. Gast. data frame, and the final acknowledgment are all considered part of the same atomic operation. Figure 3-3 illustrates the procedure. 3 2 (1) RTS (2)CTS (3) Frame (4) ACK 1 1 2 Frame ACK CTS RTS ...
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 |