ZyXEL Communications Gateway 400 User Manual page 62

Gateway 400 User Guide | Glossary
N
NAT
Network
O
Offline
Online
P
Password protection,
configuration
Phone switch
Port
Port Forwarding
PPPoE Pass Through PPPoE (Point-to-Point-Protocol over Ethernet) Pass Through enables the rout-
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(Network Address Translation) NAT is a procedure used in the in Gateway 400
to connect the local network to the Internet. Only one public IP address is usu-
ally available for the Internet, whereas on the local network, by contrast, each
station has its own private IP address. These private addresses have no valid-
ity in public networks. In order to provide all the computers with private IP ad-
dresses access to the Internet, the Gateway 400 replaces the IP addresses of
the connected computers in all outgoing data packets with its own public IP
address. To enable the incoming data packets to be assigned to the correct
destination, the Gateway 400 the stored the current connections in a table.
The term network refers to a group multiple computers and other peripheral
devices connected together to share information. The interconnected com-
puters usually have shared access to the individual hardware components
(such as mass storage devices) on the network.In addition, consumer elec-
tronics devices such as TVs, set-top boxes, etc., can be controlled via networks.
A home network may be configured as a wired and/or wireless network,
where a wide range of different technologies such as Wi-Fi, USB or wired
Ethernet work together.
Offline identifies an inactive connection.
Online identifies an active connection.
You can change the password for the user interface of the Gateway 400 in the
System/Password menu. Make sure that you always do this after you first
connect the Gateway 400 in order to prevent unauthorized access to the
Gateway 400. If you have forgotten your password, you can revert to the fac-
tory default settings of the user interface only by resetting the Gateway 400.
All custom settings will be lost in the process. To reset the Gateway 400, press
the Reset button for about 10 seconds (until the Power LED lights up in red
for the second time).
Switching device for connecting multiple devices (such as telephones, fax
equipment, answering machines, etc.).
The term port designates a connection or an interface. A distinction is made
between a physical port (e.g., a USB port for a mass storage device) and a log-
ical port (such as port 80 for the Internet connection).
Port forwarding enables computers within a local network to also operate
outside that network and thus be accessible to other external computers as
well. This is important, for example, to exchange data over the Internet or to
communicate with other computers while playing games over the network.
er to be operated in transparent mode and an additional Internet connection
to be set up from the local network.