By Alan Holt
Wireless communique 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 elements of the spectrum has facilitated the expansion in instant neighborhood region networks (WLANs). WLAN expertise is progressing at a swift speed, however the most generally accredited WLAN normal is the IEEE 802.11.
This targeted and hugely functional textual content introduces the foundations of WLANs established upon the IEEE 802.11 criteria, demonstrating the way to configure gear so that it will enforce numerous community options. Readers will achieve realizing of the safety implications of instant networks and find out how vulnerabilities may be mitigated. also, the e-book examines the underlying 802.11 protocols and explains find out how to construct mathematical types so that it will examine functionality in a WLAN environment.
Topics and Features:
- Presents a pragmatic process supported by means of the broad use of examples and specific instructions
- Discusses quite a few instant community ideas throughout a couple of varied seller structures, together with Cisco Aironet, Alactel-Lucent Omniaccess and Meru Networks
- Provides a number of mathematical types for studying the functionality of IEEE 802.11 criteria, and exhibits how you can construct those versions utilizing Maple
- Examines problems with instant defense and describes how you can enforce a instant community with firm security
- Investigates the medium entry keep an eye on sub-layer, and types for functionality research of the MAC layer
- Reviews the actual sub-layers of 802.11, describing modulation thoughts and analyzing how units adapt to alterations within the RF environment.
A hugely beneficial text/reference for pros, undergraduate and graduate-level scholars also will locate this e-book an excellent better half to a college direction 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 presently a software program advisor at the Airbus undertaking in Bristol. She used to be previously Operations supervisor for DL Consulting, New Zealand.
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Additional resources for 802.11 Wireless Networks: Security and Analysis
3 Authentication/association state machine sends an authentication request to the access-point and the access-point replies with an authentication response (without verifying the authenticity of the device). 11 also provides a number of cryptographic-based authentication schemes. These are discussed in later chapters. The authentication/association state machine is shown in the diagram in Fig. 3. 38 3 Medium Access Control Prior to authentication/association, devices must identify any access-points that are within range.
In the past, the regulatory bodies have favoured the administrative process; however, auctions have become popular in recent years. Spectrum auctions were first used in New Zealand in 1990 and have been adopted by many other countries since then. The UK was one of the first to allocate 3G (third generation) licenses in this way. 5 GHz 122 GHz 123 GHz 244 GHz 246 GHz considerable capital for the treasury, the radio spectrum is more than just a public resource; it is also a valuable commodity. Not all licensed parts of the spectrum are exclusive; some parts are shared in that they are allocated to specific technologies instead of organisations.
BSS (and ESS) is also known as infrastructure mode. With IBSS, devices associate with each other in an ad-hoc manner and can communicate directly without an access-point. A number of BSS can be interconnected through a distribution system (DS) to form an extended service set (ESS). 3. Wireless distribution systems (WDS) are also possible and we discuss a proprietary solution in Chap. 7. The diagram in Fig. 2 illustrates the BSS, ESS and IBSS architectures. 11 provides a number of services. As well as frame delivery, it also offers authentication, re-authentication and privacy functions.
802.11 Wireless Networks: Security and Analysis by Alan Holt