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 6-10 of 68
... Beacon frame in which its bit in the traffic indication map (TIM) is clear. Figure 3-21 illustrates this process. In ... frames for it. It transmits a PS-Poll to the access point to retrieve the buff- ered frames. However, the access ...
... frames. Once the station receives a Beacon frame indicating that no more traffic is buffered, it can conclude that it has received the last buffered frame and return to a low-power mode. Multirate. Support. Network technologies that ...
... frames share the structure shown in Figure 4-20. The MAC header is the same in all management frames; it does not ... Beacon frames, which are used to announce the existence of an 802.11 network. BSSIDs are assigned in the familiar ...
... Beacon transmissions announce the existence of an 802.11 network at regular intervals. Beacon frames carry information about the BSS parameters and the frames buff- ered by access points, so mobile stations must listen to Beacons. The ...
... Beacon transmissions to advertise the network's capabilities. Capability Information is also used in Probe Request and Probe Response frames. In this field, each bit is used as a flag to advertise a particular function of the network ...
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 |