11 Hardware
Hardware
When writing a specification, it is important to leave some room for interpretation to allow innovation. A standard which is too rigid will drain the life out of implementation, while a standard that is too loose does not foster interoperability. This chapter is about what the standard does not exactly specify. How does hardware implement the standard? Where does the standard allow discretion in protocol implementation, and what does that mean for the administrator?
Introduction to Wireless Networking
- Introduction to Wireless Networking
- Why Wireless?
- What Makes Wireless Networks Different
- A Network by Any Other Name...
Overview of 802.11 Networks
- Overview of 802.11 Networks
- IEEE 802 Network Technology Family Tree
- 11 Nomenclature and Design
- 11 Network Operations
- Mobility Support
11 MAC Fundamentals
- 11 MAC Fundamentals
- Challenges for the MAC
- MAC Access Modes and Timing
- Contention-Based Access Using the DCF
- Fragmentation and Reassembly
- Frame Format
- Encapsulation of Higher-Layer Protocols Within 802.11
- Contention-Based Data Service
- Frame Processing and Bridging
11 Framing in Detail
- 11 Framing in Detail
- Data Frames
- Control Frames
- Management Frames
- Frame Transmission and Association and Authentication States
Wired Equivalent Privacy (WEP)
- Wired Equivalent Privacy (WEP)
- Cryptographic Background to WEP
- WEP Cryptographic Operations
- Problems with WEP
- Dynamic WEP
User Authentication with 802.1X
- User Authentication with 802.1X
- The Extensible Authentication Protocol
- EAP Methods
- 1X: Network Port Authentication
- 1X on Wireless LANs
11i: Robust Security Networks, TKIP, and CCMP
- 11i: Robust Security Networks, TKIP, and CCMP
- The Temporal Key Integrity Protocol (TKIP)
- Counter Mode with CBC-MAC (CCMP)
- Robust Security Network (RSN) Operations
Management Operations
- Management Operations
- Management Architecture
- Scanning
- Authentication
- Preauthentication
- Association
- Power Conservation
- Timer Synchronization
- Spectrum Management
Contention-Free Service with the PCF
- Contention-Free Service with the PCF
- Contention-Free Access Using the PCF
- Detailed PCF Framing
- Power Management and the PCF
Physical Layer Overview
- Physical Layer Overview
- Physical-Layer Architecture
- The Radio Link
- RF Propagation with 802.11
- RF Engineering for 802.11
The Frequency-Hopping (FH) PHY
- The Frequency-Hopping (FH) PHY
- Frequency-Hopping Transmission
- Gaussian Frequency Shift Keying (GFSK)
- FH PHY Convergence Procedure (PLCP)
- Frequency-Hopping PMD Sublayer
- Characteristics of the FH PHY
The Direct Sequence PHYs: DSSS and HR/DSSS (802.11b)
- The Direct Sequence PHYs: DSSS and HR/DSSS (802.11b)
- Direct Sequence Transmission
- Differential Phase Shift Keying (DPSK)
- The Original Direct Sequence PHY
- Complementary Code Keying
- High Rate Direct Sequence PHY
11a and 802.11j: 5-GHz OFDM PHY
- 11a and 802.11j: 5-GHz OFDM PHY
- Orthogonal Frequency Division Multiplexing (OFDM)
- OFDM as Applied by 802.11a
- OFDM PLCP
- OFDM PMD
- Characteristics of the OFDM PHY
11g: The Extended-Rate PHY (ERP)
- 11g: The Extended-Rate PHY (ERP)
- 11g Components
- ERP Physical Layer Convergence (PLCP)
- ERP Physical Medium Dependent (PMD) Layer
A Peek Ahead at 802.11n: MIMO-OFDM
11 Hardware
- 11 Hardware
- General Structure of an 802.11 Interface
- Implementation-Specific Behavior
- Reading the Specification Sheet
Using 802.11 on Windows
11 on the Macintosh
Using 802.11 on Linux
- Using 802.11 on Linux
- PCMCIA Support on Linux
- Linux Wireless Extensions and Tools
- Agere (Lucent) Orinoco
- Atheros-Based cards and MADwifi
- 1X on Linux with xsupplicant
Using 802.11 Access Points
- Using 802.11 Access Points
- General Functions of an Access Point
- Power over Ethernet (PoE)
- Selecting Access Points
- Cisco 1200 Access Point
- Apple AirPort
Logical Wireless Network Architecture
- Logical Wireless Network Architecture
- Evaluating a Logical Architecture
- Topology Examples
- Choosing Your Logical Architecture
Security Architecture
- Security Architecture
- Security Definition and Analysis
- Authentication and Access Control
- Ensuring Secrecy Through Encryption
- Selecting Security Protocols
- Rogue Access Points
Site Planning and Project Management
- Site Planning and Project Management
- Project Planning and Requirements
- Network Requirements
- Physical Layer Selection and Design
- Planning Access-Point Placement
- Using Antennas to Tailor Coverage
11 Network Analysis
11 Performance Tuning
Conclusions and Predictions
EAN: 2147483647
Pages: 179
