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Glossary
Giga762SX WLAN dsl / eng / A31008-M705-W171-1x-5819 / glossary.fm / 02.07.2008
Schablone 2005_07_27
Gateway
A gateway is a device for connecting networks with completely different architectures
(addressing, protocols, application interfaces etc.). Although it is not totally correct, the
term is also used as a synonym for Router.
Global IP address
See Public IP address
Half duplex
Operating mode for data transmission. Only one side can send and/or receive data at
the same time.
See also: Full duplex
HTTP proxy
An HTTP proxy is a Server that network components use for their Internet traffic. All
requests are sent via the proxy.
Hub
A hub connects several network components in a star-topology network by sending all
the data it receives from one network component to all the other network components.
See also: Switch, Bridge, Router, Gateway
IEEE
Institute of Electrical and Electronic Engineers
The IEEE is an international body for defining network standards, especially for stand-
ardising LAN technologies, transfer protocols, data transfer speeds and wiring.
IEEE 802.11
IEEE 802.11 is a standard for wireless LANs operating in the 2.4 GHz or 5 GHz band. In
so-called Infrastructure mode, terminals can be connected to a base station (Access
point) or they can connect with each other spontaneously (Ad-hoc mode).
IGMP
Internet Group Management Protocol
IGMP is an Internet Protocol that enables an Internet computer to inform neighbouring
routers that it is a member of a multicast group. With multicasting, a computer can send
content on the Internet to several other computers that have registered an interest in
the first computer's content. Multicasting can, for example, be used for multimedia pro-
grams for media streaming to recipients that have set up multicast group membership.
Infrastructure mode
Infrastructure mode is a way of operating wireless local networks (WLANs) in which an
Access point handles the data traffic. Network components cannot establish a direct
connection with each other as is the case in Ad-hoc mode.
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