New PDF release: 802.11 Wireless Networks: Security and Analysis

By Alan Holt

ISBN-10: 184996274X

ISBN-13: 9781849962742

Wireless communique has the benefit of mobility and obviates the necessity for cabling, yet is inherently much less safe and is topic to the heavy rules 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 expertise is progressing at a speedy velocity, however the most generally authorised WLAN regular is the IEEE 802.11.

This specified and hugely sensible textual content introduces the foundations of WLANs dependent upon the IEEE 802.11 criteria, demonstrating tips to configure gear that allows you to enforce numerous community strategies. Readers will achieve knowing of the protection implications of instant networks and learn the way vulnerabilities might be mitigated. also, the ebook examines the underlying 802.11 protocols and explains the right way to construct mathematical versions so as to examine functionality in a WLAN environment.

Topics and Features:

  • Presents a pragmatic strategy supported by way of the large use of examples and distinctive instructions
  • Discusses a variety of instant community recommendations throughout a couple of diverse seller systems, together with Cisco Aironet, Alactel-Lucent Omniaccess and Meru Networks
  • Provides quite a few mathematical types for examining the functionality of IEEE 802.11 criteria, and indicates easy methods to construct those types utilizing Maple
  • Examines problems with instant safeguard and describes the best way to enforce a instant community with firm security
  • Investigates the medium entry keep watch over sub-layer, and versions for functionality research of the MAC layer
  • Reviews the actual sub-layers of 802.11, describing modulation strategies and studying how units adapt to adjustments within the RF environment.

A hugely worthwhile text/reference for execs, undergraduate and graduate-level scholars also will locate this publication a great spouse to a college path on instant networking.

Dr. Alan Holt is leader Technical Officer on the community consultancy corporation IP functionality Ltd., dependent 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 at present a software program advisor at the Airbus venture 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

Example text

11 must appear as a traditional 802 LAN to the protocol layer above. 11 defines a medium access control (MAC) data link sub-layer which provides services to the logical link control (LLC) sub-layer. Below the MAC sub-layer is the physical layer which comprises two sub-layers. The physical layer convergence protocol (PLCP) sub-layer and the physical medium dependent (PMD) sub-layer will be discussed in more detail in Chap. 4. The diagram in Fig. 11 reference model. LLC frames are passed to the MAC layer and encapsulated in MAC service data units (MSDUs) by prepending a header and appending a frame check sequence (FCS) to the payload.

James Clark Maxwell derived a mathematical framework based upon Faraday’s empirical data on magnetic lines of force. Maxwell’s equations describe how electromagnetic waves propagate. Electric and magnetic fields propagate as sinusoids at right angles to each other. 1 shows the direction of an electric field (E) and magnetic field (H ) relative to the direction of the wave propagation. The wave propagates out in all directions, creating a spherical wave front. 1) S= 4πd 2 A. -Y. 1007/978-1-84996-275-9_2, © Springer-Verlag London Limited 2010 15 16 2 Radio Frequencies Fig.

The device caches any BSS identifiers (BSSIDs) acquired in the scanning process (either passive or active). Beacon frames are not just for announcing wireless networks; they are also used to synchronise the clocks on all devices within the BSS. Beacons are transmitted periodically by the access-points. The beacon carries a target beacon transmission time (TBTT) so that devices know when the next beacon is due. Devices in the BSS do not schedule frame transmission when the TBTT is due. 11 MAC frame format.

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802.11 Wireless Networks: Security and Analysis by Alan Holt

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