Fujitsu LifeBook E8110 User Manual download pdf (Page 107)

WIreless LAN User’s Guide

Wireless LAN Glossary

GLOSSARY

Access point

Wireless network device used to bridge wireless and

wired network traffic.

Ad Hoc Mode

Ad Hoc Mode refers to a wireless network architecture

where wireless network connectivity between multiple

computers is established without a central wireless

network device, typically known as Access Points.

Connectivity is accomplished using only client devices

in a peer-to-peer fashion. For details, refer to “Ad hoc

connection” on page 90.

Channel

Range of narrow-band frequencies used by the WLAN

device to transmit data. IEEE802.11b/g - 11 channels, 22

MHz wide channels.

DHCP (Dynamic Host Configuration Protocol)

A protocol that provides a means to dynamically allocate

IP addresses to computers on a local area network.

DNS (Domain Name System)

A data query service that provides a mechanism with

which to translate host names into Internet addresses.

IEEE802.11a

Wireless LAN standard that supports a maximum data

rate of 54 Mbps. 802.11a devices operate in the 5 GHz

lower and middle UNII bands.

IEEE802.11b

Wireless LAN standard that supports a maximum data

rate of 11 Mbps. 802.11b devices operate in the 2.4 GHz

ISM band.

IEEE802.11g

Wireless LAN standard that supports a maximum data

rate of 54 Mbps. 802.11g devices operate in the 2.4 GHz

ISM band.

IP address

The logical 32-bit host address defined by the Internet

Protocol that uniquely identifies a computer on a

network. The IP address is usually expressed in dotted

decimal notation.

LAN (Local Area Network)

A LAN or Local Area Network is a computer network

(or data communications network) which is confined to

a limited geographical area.

MAC address (Media Access Control Address)

A MAC address (also called an Ethernet address or IEEE

MAC address) is the 48-bit address (typically written as

twelve hexadecimal digits, 0 through 9 and A through F,

or as six hexadecimal numbers separated by periods or

colons, e.g., 0080002012ef, 0:80:0:2:20:ef) which identify

uniquely a computer that has an Ethernet interface.

MTU (Maximum Transmission Unit)

The maximum size of data which can be transmitted at

one time in networks including the Internet. In an envi-

ronment whose maximum size of data is too large to

correctly receive data, normal communications can be

restored by setting the size of MTU to a smaller value.

Network key

Data that is used for encrypting data in data communi-

cation. The personal computer uses the same network

key both for data encryption and decryption, therefore,

it is necessary to set the same network key as the other

side of communication.

Network name (SSID: Service Set Identifier)

When a wireless LAN network is configured, grouping is

performed to avoid interference or data theft. This

grouping is performed with “Network name (SSID)”. In

order to improve security, the network key is set

allowing no communication unless “Network name

(SSID)” coincides with the network key.

Open system authentication

Null authentication method specified in the 802.11 stan-

dard that performs no authentication checks on a wire-

less client before allowing it to associate.

PPPoE (Point to Point Protocol over Ethernet)

A method of allowing the authentication protocol

adopted in telephone line connection (PPP) to be used

over an Ethernet.

Protocol

A procedure or rule of delivering data among

computers. Ordered data communication is allowed by

making all conditions required for communication

including the method of data transmission/reception

and action upon communication errors into procedures.

Shared key authentication

802.11 network authentication method in which the AP

sends the client device a challenge text packet that the

client must then encrypt with the correct WEP key and

return to the AP. If the client has the wrong key or no

key, authentication will fail and the client will not be

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