802.11 Wireless Networks: Security and Analysis - download pdf or read online

By Alan Holt

ISBN-10: 184996274X

ISBN-13: 9781849962742

Wireless conversation has the good thing about mobility and obviates the necessity for cabling, yet is inherently much less safe and is topic to the heavy legislation of the radio frequency spectrum. however, the allocation of unlicensed components of the spectrum has facilitated the expansion in instant neighborhood sector networks (WLANs). WLAN know-how is progressing at a quick speed, however the most generally permitted WLAN commonplace is the IEEE 802.11.

This certain and hugely sensible textual content introduces the foundations of WLANs dependent upon the IEEE 802.11 criteria, demonstrating the best way to configure apparatus which will enforce a number of community ideas. Readers will achieve figuring out of the safety implications of instant networks and find out how vulnerabilities should be mitigated. also, the ebook examines the underlying 802.11 protocols and explains easy methods to construct mathematical versions on the way to examine functionality in a WLAN environment.

Topics and Features:

  • Presents a realistic technique supported by means of the broad use of examples and unique instructions
  • Discusses a variety of instant community strategies throughout a couple of assorted seller systems, together with Cisco Aironet, Alactel-Lucent Omniaccess and Meru Networks
  • Provides a variety of mathematical versions for examining the functionality of IEEE 802.11 criteria, and exhibits tips on how to construct those types utilizing Maple
  • Examines problems with instant defense and describes easy methods to enforce a instant community with firm security
  • Investigates the medium entry regulate sub-layer, and versions for functionality research of the MAC layer
  • Reviews the actual sub-layers of 802.11, describing modulation options and interpreting how units adapt to adjustments within the RF environment.

A hugely precious text/reference for execs, undergraduate and graduate-level scholars also will locate this ebook an awesome spouse to a school direction on instant networking.

Dr. Alan Holt is leader Technical Officer on the community consultancy corporation IP functionality Ltd., established in Bristol, united kingdom. he's writer of the preferred Springer textual content Network functionality research: utilizing the J Programming Language.

Dr. Chi-Yu Huang works for Tata applied sciences Ltd., and is presently a software program advisor at the Airbus undertaking in Bristol. She was once previously Operations supervisor for DL Consulting, New Zealand.

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Extra info for 802.11 Wireless Networks: Security and Analysis

Sample text

As the wave front emanates from the transmitter, the RF energy spreads as it propagates into the surrounding area. The nature of the spreading depends upon the antenna. An isotropic antenna produces a spherical wave front whereby RF energy spreads equally in all directions. This spreading of the wave front causes the power density to diminish. 1) that the power density S diminishes according to an inverse square law (with respect to distance). Furthermore, only a small proportion of the wave is incident to the receive antenna.

Neighbouring devices defer transmission for the duration of the busy-tone. Split-channel reservation multiple access (SRMA) proposed a handshake between the sender and receiver. This represents a power saving over BTMA which must transmit a continuous signal throughout reception. Like BTMA, SRMA uses a data channel for transmitting data and a separate control channel for exchanging handshakes. Multiple access collision avoidance (MACA) [23] was the first CSMA/CA-like protocol. It uses an RTS/CTS mechanism influenced by the Appletalk protocol.

725 GHz ISM and is, therefore, sometimes referred to as the U-NII/ISM band. 4 Spectrum Management In unlicensed bands, WLAN devices must observe certain standards of “etiquette” in terms of spectrum usage. In the previous section, we mentioned some of the regulations regarding transmission power output. In addition to transmission power, WLAN devices must use spread spectrum techniques. Spread spectrum is method of spreading a narrow band signal over a wider frequency band. Spreading communications signals over wider bands makes them more resilient to unintentional interference and jamming.

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802.11 Wireless Networks: Security and Analysis by Alan Holt


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