Index_J

H

Hackers

agendas of, 268-269

black hat, 268

drive by, 270, 274, 276-277

exploits of, 268-274

pyramid, 267-269

types of, 267-268

white hat, 268

Half-duplex

defining, 121

exceptions to, 121

Hexadecimal key values, 300, 398-399

manual entry, 301

Hidden node problem, 39

Hierarchical network, 45

HIPERLAN/2

802.11a, coexisting with, 434

European wireless LAN standard of, 428

frequencies, managing, 428

Holux GM-210 GPS receiver, 388-389

Home networks.

See also Networking; Networks; WiFi networks.

80% design for, 68-69

HomePlug Powerline

Alliance, 226

Ethernet bridges, 226

networking, 226-227

web site, 226

HomeRF, 10, 426

advantages of, 10, 426

band space, sharing, 17

wireless technology of, 17

Horizontal polarization, 146-147

bypassing, 147

problems of, 147

Hosts, 47

Hotspot aggregator, 242

Hotspot networks, 6, 242

accounts, 242

costs, 243

free community, locating, 241

major, 244-252

networks of, 242

personal directories of, 240

plans, 243-244

public, 237-240

on the road, 237-240

web directories of, 241

Hubs, 27-28

active, 27-28

passive, 27

reliability of, 28

and switches, mixing, 34-35