April 2011
Intermediate to advanced
368 pages
11h 36m
English
Content preview from Secure Roaming in 802.11 Networks
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Chapter 5
these drivers monitor the signal strength from the current AP, and how, based on the drop in
signal strength below a prescribed threshold, the 802.11 software attempts to roam to the best
neighboring AP in its scan list. As we will see in later chapters, the concept of the best neigh-
boring AP is subjective and open to wide interpretation. In order to keep this chapter’s prac-
tical examples and tests easy to follow, there will be only one roaming candidate available.
5.2 The Driver and Client in an 802.11 Station
5.2.1 Introduction
Figure 5.1 depicts the software implementation in a typical 802.11 STA. The driver directly
interfaces with ...
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