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Glossary
Gigaset SX763 WLAN dsl / en AnnA / A31008-M707-R131-1-7619 / glossary.fm / 20.07.2006
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NAT
Network Address Translation
NAT is a method for converting IP addresses (
) within a network into
one or several
. With NAT, several network compo-
can share the router's public IP address to connect to the Internet. The
network components of the local network are hidden behind the router's IP address reg-
istered on the Internet. Because of this security function, NAT is frequently used as part
of the
of a network. If you want to make services on a PC in the local network
available on the Internet despite NAT, you can configure the Gigaset SX763 WLAN dsl as
a
.
Network
A network is a group of devices connected in wired or wireless mode so that they can
share resources such as data and peripherals. A general distinction is made between
local networks (
LANs
) and wide-area networks (
WANs
).
Network adapter
The network adapter is the hardware device that creates the connection between a net-
work component and a local network. The connection can be wired or wireless. An Eth-
ernet network card is an example of a wired network adapter. The Gigaset PC Card 108
and the Gigaset USB Adapter 108 are examples of wireless network adapters.
A network adapter has a unique address, the
.
PBX
Private Branch Exchange
PBX is the English acronym for a public branch exchange, which allows connection and
configuration of extensions and telephone functions.
Port
Data is exchanged between two applications in a network across a port. The port
number addresses an application within a network component. The combination of
/port number uniquely identifies the recipient or sender of a data packet within
a network. Some applications (e.g. Internet services such as HTTP or FTP) work with
fixed port numbers; others are allocated a free port number whenever they need one.
Port forwarding
In port forwarding the Gigaset SX763 WLAN dsl directs data packets from the
that are addressed to a particular
to the corresponding port of the appropriate net-
work component. This enables servers within the local network to offer services on the
Internet without them needing a
See also: