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Glossary
Gigaset WLAN Repeater/ englisch / A31008-E505-B105-1-7619 / glossary.fm / 08.03.2004
Network adapter
The network adapter is the hardware device that implements the connection of a net-
work component to a local network. The connection can be wired or wireless. An Eth-
ernet network card is an example of a wired network adapter. Wireless network adapt-
ers are for example the Gigaset PC Card 54 and the Gigaset PCI Card 54.
A network adapter has a unique address, the
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, data packets from the
that are addressed to a particular
are directed to the corresponding port of the appropriate network component. This
enables servers within the local area network to offer services on the Internet without
them needing a
PPPoE
Point-to-Point Protocol over
PPPoE is a
for connecting network components in a local Ethernet network to
the
via a modem.
PPTP
Point-to-Point
Protocol
connection using PPTP
that creates a "tunnel" within an Internet
connection for secure private connection in which the data are sent in encrypted form.
The PPTP protocol is used in a Virtual Private Network (
Private IP address
The private
is a network component's address within the local area network
(
). The network operator can assign any address he or she wants. Devices that act
as a link from a local network to the Internet have a private and a
.
Protocol
A protocol describes the agreements for communicating on a network. It contains rules
for opening, administering and closing a connection, about data formats, time frames
and error handling. Communications between two applications require different proto-
cols at various levels, e.g. the
protocols for the
.
Public IP address
is a network component's address on the
by the
. Devices that act as a link from a local network to the Internet
.
