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The value indicated above is the maximum theoretical
value for the wireless LAN standard, and does not
indicate the actual data transfer rate.
The value indicated above is the maximum theoretical
value for the wireless LAN standard, and does not
indicate the actual data transfer rate.
About Wireless LAN
Wi-Fi
®
Wi-Fi Certification assures tested and proven
interoperability by the Wi-Fi Alliance, a group certifying
interoperability among wireless LAN devices.
IEEE 802.11b
This is one wireless LAN standard set by the 802
working group that establishes LAN technology
standards at the IEEE (Institute of Electrical and
Electronics Engineers) of the United States. It uses the
2.4 GHz band usable freely without a radio frequency
license (ISM band), enabling communications at a
maximum speed of 11 Mbps.
IEEE 802.11g
This is another wireless LAN standard set by the
802 working group that establishes LAN technology
standards at the IEEE (Institute of Electrical and
Electronics Engineers) of the United States, and is
compatible with IEEE 802.11b. It also uses the 2.4
GHz band, but enables communications at a maximum
speed of 54 Mbps.
Infrastructure Communications
“Infrastructure Communications” refers to networks
using wireless LAN access points.
This function can be used to connect to the Internet or
a wired LAN via a wireless LAN access point. Wireless
LAN access points include wireless broadband
routers.
Ad-hoc Communications
Signal transfer through wireless interconnection of
computers is referred to as “ad hoc communications”.
With such ad hoc communications there is no
connection to the Internet. Ad hoc communications are
suited for establishing simple temporary networks.
Network Names
(SSID: Security Set Identifier)
When forming wireless LAN networks, groups are
formed to prevent interference, data theft, etc.
This grouping is done by “SSID” or “Security Set
Identifiers”. For further security, a WEP key is set and
signal transfer is not possible unless the SSID and
WEP key match.
WEP Key (Network Key)
This is key information used for encrypting data when
conducting data transfer. On the AVR-4308, the same
WEP key is used for data encryption and decryption,
so the same WEP key must be set on both devices in
order for communications to be established between
them.
WPA (Wi-Fi Protected Access)
This is a security standard established by the Wi-Fi
Alliance. In addition to the conventional SSID (network
name) and WEP key (network key), it also uses a user
identification function and encrypting protocol for
stronger security.
WPA2 (Wi-Fi Protected Access 2)
This is a new version of the WPA established by the
Wi-Fi Alliance, compatible with more secure AES
encryption.
WPA-PSK/WPA2-PSK (Pre-shared Key)
This is a simple authentication system for mutual
authentication when a preset character string matches
on the wireless LAN access point and client.
Passphrase
This refers to the code key used for WPA-PSK/WPA2-
PSK authentication, a WPA authentication method.
TKIP (Temporal Key Integrity Protocol)
This is a network key used for WPA. The encryption
algorithm is RC4, the same as for WEP, but the security
level is increased by changing the network key used
for encryption for each packet.
AES (Advanced Encryption Standard)
This is a next generation standard encryption method
replacing the current DES and 3DES, and because of
its high security it is expected to be applied widely
to wireless LANs in the future. It uses the “Rijndael”
algorithm developed by two Belgian cryptographers to
divide the data into blocks of fixed lengths and encrypt
each block. It supports data lengths of 128, 192 and
256 bits and key lengths of 128, 192 and 256 bits as
well, offering extremely high encryption security.
Information