Index_H

F

Fab dBi Magnet Mount Omnidirectional antenna, 389-390

Farside networks, configuring, 344-345

Fee-based portals

Boingo, 98, 101

T-Mobile, 98, 101

FHSS (Frequency Hopping Spread Spectrum), managing frequencies using, 427, 430

Fields

auditing, 215-218

Signal, 383

Signal+, 382

SNR, 382

SNR+, 382

SSID, 381

Firewalls, 56-58

defining, 56

enabling, 275

for home network, 57-58

Firmware, 110-112

defining, 111

differences in, 79

downloading, 111

updating, 126-129

versions of, locating, 128

Firmware updates, 126-129

availability of, 127

downloading/installing, 127

example of, 128-129

executable archives, 127

First seen field, 382

Fixed connections, 67

Flag bits, 396-401

CF Poll Request, 400

CF Pollable bits, 400

channel agility, 399-400

common values, 399

enabling WEP, 400

hexadecimal values and equivalent bit patterns, 398-399

interpreting values, 397-401

PBCC, 400

short preamble bit, 400

Flags field, 383

Flash Memory, 111

updating, 111-112

Flash RAM, 111

Frame, 282

Free portals

NoCatNet, 98

Sputnik, 98

Free-space wavelength, 321-323, 326

Frequency management systems

defining, 427

types of, 427

Fresnel zone, 193, 335, 337