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Glossary
802.11b
: A family of IEEE-defined specifications for wireless networks. The 802.11b
standard supports data transfer rates up to 11 Mbits/sec in the 2.4 GHz band using DSSS
technology. Also known as WiFi.
802.11g
: A family of IEEE-defined specifications for wireless networks. The 802.11g
standard supports data transfer rates up to 54 Mbits/sec in the 2.4 GHz band using DSSS
technology. Also backwards compatible with 802.11b.
Access Point
: See Wireless Access Point.
Ad Hoc
: A wireless computer-to-computer LAN. An Ad Hoc network can consist of two
devices with wireless adapters, and does not require a WAP, router, or gateway. Also
known as peer-to-peer mode. See also infrastructure.
ALG
(Application Layer Gateway): A stricter security policy for specific applications. A
special code (known as a proxy server) is installed to control the flow of Internet services
through the firewall to the application.
Associated Client
: See Client PC.
Beacon
: A packet that identifies the location of the base wireless station and allows the
mobile clients to synchronize with the base station.
Bridge
: An intelligent, internetworking device that forwards or filters packets between
different networks based on data link layer (MAC) address information.
Broadband
: A method of communication where a wide band of frequencies is available
to transmit voice, data, and video signals over a single medium. Information can be sent
on many different channels, allowing more information to be sent in a given period of
time (the same way multiple lanes allow more cars on the road).
BSSID
(Basic Service Set Identifier): The MAC address of the wireless router. A BSS
consists of a Wireless Access Point and the adapters associated with it.
Cable Modem:
A device that provides Internet access to a user by connecting a computer
to the cable television network, which in turn connects to the Internet. Cable modem
users have a continuous always-on connection to the Internet.
Channel
: A specific carrier frequency used in wireless communications. In order to
communication with each other, each wireless device must be on the same channel.
Client PC
: Any computer connected to the router, whether wired or wireless.
Daisy Chain:
A hardware configuration where devices are connected one after the other
in series. Transmitted signals proceed down the chain from the first device to the second,
and so on.
DDNS
(Dynamic DNS): A service that allows you to alias a dynamic IP address to a
static hostname so that your PC/server remains easily accessible, even when your IP
address changes.
Summary of Contents for BR455GWDC
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