Siemens Gigaset SX541 WLAN dsl - Page 176

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Glossary
Gigaset SX541 WLAN dsl / englisch / A31008-M1025-L101-1-7619 / glossary.fm / 21.07.2005
Schablone 2005_05_02
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 IP
address/port number uniquely identifies the recipient or sender of a data packet within
a network. Some applications (for example 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 SX541 WLAN dsl directs data packets from the Internet
that are addressed to a particular Port to the corresponding port of the appropriate net-
work component. This enables servers within the local area network to offer services on
the Internet without them needing a Public IP address.
See also: Virtual server
PPPoA
Point-to-Point Protocol over ATM
PPPoA is a Protocol for connecting network components in a local Ethernet network to
the Internet via an ATM network.
PPPoE
Point-to-Point Protocol over Ethernet
PPPoE is a Protocol for connecting network components in a local Ethernet network to
the Internet via a modem.
Private IP address
The private IP address (also known as the local IP address) is a network component's
address within the local area network (LAN). The network operator can assign any
address he or she wants. Devices that act as a link from a local network, such as the
Gigaset SX541 WLAN dsl, have a private and a Public IP address.
Protocol
A protocol describes the agreements for communicating in a network. It contains rules
for opening, administering and closing a connection, as well as about data formats,
time frames and handling possible errors. Communications between two applications
require different protocols at various levels, for example the TCP/IP protocols for the
Internet.
Public IP address
The public IP address (also known as the global IP address) is a network component's
address on the Internet. It is assigned by the Internet Provider. Devices that create a link
from a LAN to the Internet, such as the Gigaset SX541 WLAN dsl, have a public and a
Private IP address.
Radio network
See WLAN