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Glossary
Gigaset SE551 WLAN dsl/cable / deutsch / A31008-M1029-B101-1-19 / glossary.fm / 25.10.2006
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Firewall
Firewalls are used by network operators as protection against unauthorised external
access. This involves a whole bundle of hardware and software actions and technologies
that monitor and control the data flow between the private network to be protected and
an unprotected network such as the
.
Flat rate
Flat rate is a particular billing system for
charges a monthly fee regardless of the duration and number of logins.
Full duplex
Data transmission mode in which data can be sent and received at the same time.
See also
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
.
Global IP address
Half duplex
Operating mode for data transfer. Only one party can receive or send data at a time.
See also
HTTP Proxy
An HTTP proxy is a
that network components use for their
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:
IEEE
Institute of Electrical and Electronic Engineers
The IEEE is an international body for defining network standards, especially for stand-
ardising
technologies, transmission protocols and speeds, and wiring.
IEEE 802.11
802.11 is a standard for wireless LANs operating in the 2.4 GHz band. In so-called
, terminals can be connected to a base station (
) or they
can connect with each other spontaneously (
).