Network Mask; Proxy Server - Grundig 50 GUB 7040 Benutzerhandbuch

GLOSSARY
LNB
Low Noise Block is located in the center of
a parabolic antennae.
E.g. It implements the satellite frequencies
that are between 10.7–11.75 or 11.8–12.75
GHz in 950 to 2150 MHz and ensures cable
transmission with coaxial cables (and with
fiber-optic cables recently) and reception with
satellite receivers.
MP3
Compressed audio file format.
NAS (network attached storage)
The abbreviation NAS is used for devices that
provide data from a hard drive to a network.

Network mask

The network mask or net mask, sometimes also
referred to as a subnet mask, is a bit mask that
separates an IP address into a network part and
a device/host part. It is used in IP networks to
make routing decisions.
Network name (SSID)
The network name (SSID – service set identifier)
is the term used for the identification of a
wireless network that is based on IEEE 802.11.
Every wireless LAN has a configurable SSID,
which uniquely identifies the wireless network.
The character sequence of the network name
can be up to 64 characters in length. It is
configured in the base station (access point)
of a wireless LAN and set on all clients which
access it.
Noise Reduction
Reduces the noise coming from the signal. It
should therefore be used minimally provided
that a good picture material is present.
Perfect Clear
Improves the general image by means of a
gentle blue hue (giving the appearance of
greater sharpness) and improves the black level
by setting this entirely to black from a specific
level of greyness. This reduces the visible grey
values in the dark areas of the picture.
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ENGLISH
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Special IP Address
Private IP addresses belong to the particular
IP address ranges that are not routed in the
Internet. They can be used by anybody for
private networks, such as LANs. Many computer
networks require complete connectivity at IP
level, but only limited access to the Internet.
If such a computer network has a private IP
address range, it forms an Intranet which
cannot be accessed from the Internet as the
Internet routers ignore private address ranges.
A gateway or router that is placed in this private
network and which has a public address in
the Internet as well as a private IP address
makes the connection to the Internet. This can
be performed by a proxy or using NAT/PAT/
masquerading. As the address range used can
only be viewed within the private network, the
same range can also be used in other private
networks. The unique nature of an IP address
required by the Internet protocol is ensured by
this restricted visibility.

Proxy server

A proxy or proxy server is a service program
for computer networks that administers data
transfer. It makes data transfer faster, and can
also increase security by implementing access
control mechanisms. The transfer is conducted
between computers or programs in computer
networks. On the server side, the proxy acts as
a client; on the client side, it acts as a server.
Router
A router is a network component that links
several computer networks. Router analyzes
(on the basis of layer 3 information) the
network packages of a protocol it receives and
forwards it to the intended destination network.
Conventional routers work on layer 3 of the
application layer. A router has an interface
for every network connected to it. When data
is received, the router determines the correct
path to the destination and thereby the suitable
interface via which the data can be transferred.
For this it uses a locally available routing table
that specifies via which router connection a
particular network can be reached.