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As 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:
Recensione: Among network designers and administrators, wired Ethernet is a known quantity. Plenty is known about how to build good twisted-pair network infrastructures, how to keep them secure, and how to monitor their excess capacity. Not so for the wireless Ethernet networks (built around the IEEE 802.11x standards)--these hold much more mystery for even experienced network designers. 802.11 Wireless Networks: The Definitive Guide aims to codify the body of knowledge needed to design and maintain wireless local area networks (LANs). The authors succeed admirably in this, covering what installation and administration teams need to know and digging into information of use to driver writers and others working at lower levels.
The only significant detail that's been excluded has to do with security--a notorious weak point of 802.11x LANs. The authors cover the feeble but widely used Wired Equivalent Privacy (WEP) authentication protocol in detail and devote another whole chapter to 802.1x, which is an emerging authentication scheme based on Extensible Authentication Protocol (EAP). The author has considerable skill in communicating information graphically and does a great job of using graphs to show how communications frequencies shift over time and how conversations among access points and network nodes progress over time. This is indeed an authoritative document. --David Wall
Topics covered: How IEEE 802.11a and 802.11b wireless networks (also known as WiFi networks) work, and how to configure your own. The framing specification is covered well, as are authentication protocols and (in detail) the physical phenomena that affect IEEE 802.11x radio transmissions. There's advice on how to design a wireless network topology, and how to go about network traffic analysis and performance improvement.
Titolo: 802.11 Wireless Networks: The Definitive ...
Casa editrice: O'Reilly Media
Condizione libro: New
Descrizione libro O'Reilly Media. PAPERBACK. Condizione libro: Very Good. 0596100523 Very Good Condition. No CD/DVD(s) Included. Tight and Neat. Five star seller - Buy with confidence!. Codice libro della libreria Z0596100523Z2
Descrizione libro O'Reilly Media, 2005. Paperback. Condizione libro: Used: Good. Codice libro della libreria SONG0596100523
Descrizione libro O'Reilly Media, 2005. Condizione libro: Used. This Book is in Good Condition. Clean Copy With Light Amount of Wear. 100% Guaranteed. Summary: ForewordPreface1. Introduction to Wireless NetworkingWhy Wireless?What Makes Wireless Networks DifferentA Network by Any Other Name.2. Overview of 802.11 NetworksIEEE 802 Network Technology Family Tree802.11 Nomenclature and Design802.11 Network OperationsMobility Support3. 802.11 MAC FundamentalsChallenges for the MACMAC Access Modes and TimingContention-Based Access Using the DCFFragmentation and ReassemblyFrame FormatEncapsulation of Higher-Layer Protocols Within 802.11Contention-Based Data ServiceFrame Processing and Bridging4. 802.11 Framing in DetailData FramesControl FramesManagement FramesFrame Transmission and Association and Authentication States5. Wired Equivalent Privacy (WEP)Cryptographic Background to WEPWEP Cryptographic OperationsProblems with WEPDynamic WEP6. User Authentication with 802.1XThe Extensible Authentication ProtocolEAP Methods802.1X: Network Port Authentication802.1X on Wireless LANs7. 802.11i: Robust Security Networks, TKIP, and CCMPThe Temporal Key Integrity Protocol (TKIP)Counter Mode with CBC-MAC (CCMP)Robust Security Network (RSN) Operations8. Management OperationsManagement ArchitectureScanningAuthenticationPreauthenticationAssociationPower ConservationTimer SynchronizationSpectrum Management9. Contention-Free Service with the PCFContention-Free Access Using the PCFDetailed PCF FramingPower Management and the PCF10. Physical Layer OverviewPhysical-Layer ArchitectureThe Radio LinkRF Propagation with 802.11RF Engineering for 802.1111. The Frequency-Hopping (FH) PHYFrequency-Hopping TransmissionGaussian Frequency Shift Keying (GFSK)FH PHY Convergence Procedure (PLCP)Frequency-Hopping PMD SublayerCharacteristics of the FH PHY12. The Direct Sequence PHYs: DSSS and HR/DSSS (802.11b)Direct Sequence TransmissionDifferential Phase Shift Keying (DPSK)The "Original" Direct Sequence PHYComplementary Code KeyingHigh Rate Direct Sequence PHY13. 802.11a and 802.11j: 5-GHz OFDM PHYOrthogonal Frequency Division Multiplexing (OFDM)OFDM as Applied by 802.11aOFDM PLCPOFDM PMDCharacteristics of the OFDM PHY14. 802.11g: The Extended-Rate PHY (ERP)802.11g ComponentsERP Physical Layer Convergence (PLCP)ERP Physical Medium Dependent (PMD) Layer15. A Peek Ahead at 802.11n: MIMO-OFDMCommon FeaturesWWiSETGnSyncComparison and Conclusions16. 802.11 HardwareGeneral Structure of an 802.11 InterfaceImplementation-Specific BehaviorReading the Specification Sheet17. Using 802.11 on WindowsWindows XPWindows 2000Windows Computer Authentication18. 802.11 on the MacintoshThe AirPort Extreme Card802.1X on the AirPort19. Using 802.11 on LinuxPCMCIA Support on LinuxLinux Wireless Extensions and ToolsAgere (Lucent) OrinocoAtheros-Based cards and MADwifi802.1X on Linux with xsupplicant20. Using 802.11 Access PointsGeneral Functions of an Access PointPower over Ethernet (PoE)Selecting Access PointsCisco 1200 Access PointApple AirPort21. Logical Wireless Network ArchitectureEvaluating a Logical ArchitectureTopology ExamplesChoosing Your Logical Architecture22. Security ArchitectureSecurity Definition and AnalysisAuthentication and Access ControlEnsuring Secrecy Through EncryptionSelecting Security ProtocolsRogue Access Points23. Site Planning and Project ManagementProject Planning and RequirementsNetwork RequirementsPhysical Layer Selection and DesignPlanning Access-Point PlacementUsing Antennas to Tailor Coverage24. 802.11 Network AnalysisNetwork AnalyzersEthereal802.11 Network Analysis ChecklistOther Tools25. 802.11 Performance Tuning802.11 Performance CalculationsImproving PerformanceTunable 802.11 Parameters26. Conclusions and PredictionsStandards WorkCurrent Trends in Wireless NetworkingThe EndGlossaryIndex. Codice libro della libreria ABE_book_usedgood_0596100523
Descrizione libro Paperback. Condizione libro: Good. Used book in GOOD condition. Good enough to read. Binding in GOOD shape with no missing pages. Cover has visible wear. Markings, writings and highligtings inside the book. Text ONLY. Does NOT include accessories such as CD, DVD, access code etc. Fast Shipping. Prompt Customer Service. Satisfaction guaranteed. Codice libro della libreria 0596100523GOA
Descrizione libro O'Reilly Media, 2005. Paperback. Condizione libro: Used: Good. Codice libro della libreria 8584526
Descrizione libro 2005. Soft cover. Condizione libro: New. This book is BRAND NEW Soft cover International edition with black and white printing. ISBN number & cover page may be different but contents identical to the US edition word by word. Book is in English language. Codice libro della libreria UN-SHRO-660
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Descrizione libro Condizione libro: Good. Book Condition: Good. Codice libro della libreria 97805961005204.0
Descrizione libro O'Reilly Media, 2005. Paperback. Condizione libro: Acceptable. All of our books without an ISBN number (normally pre-1970 in date) are described individually in detail. Books with an ISBN number (this one included) are all offered for sale in a reasonable condition or better: some may be in very good, near fine, or fine condition. If the condition is critical to your decision to purchase, then please contact us and we will let you know our view of its condition. If the book is extremely heavy, we will need to contact you before completion of purchase to advise you of extra postage costs. Codice libro della libreria 23422
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