Siemens SX541 WLAN dsl User Manual

Gigaset SX541 WLAN dsl / englisch / A31008-M1025-L101-1-7619        / glossary.fm / 21.07.2005

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hablone 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

/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 

 

that are addressed to a particular 

 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 

. 

PPPoA
Point-to-Point Protocol over ATM 
PPPoA is a 

 for connecting network components in a local Ethernet network to 

via an ATM network. 

PPPoE
Point-to-Point Protocol over 

PPPoE is a 

 for connecting network components in a local Ethernet network to 

via a modem. 

Private IP address
The private 

 (also known as the local IP address) 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, such as the 
Gigaset SX541 WLAN dsl, have a private and a 

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 

 protocols for the 

. 

Public IP address
The public 

 (also known as the global IP address) is a network component's 

address on the 

. It is assigned by the 

. Devices that create a link 

from a LAN to the Internet, such as the Gigaset SX541 WLAN dsl, have a public and a 

.

Radio network
See