Table of Contents
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Glossary
Socket:
Data connections coming about by ->TCP or ->UDP work with sockets for
addressing. A socket consists
Street Name and Street Numb
Switch:
A device which can connect several machines to the Ethernet. Contrary to a
hub the switch
which are conn
cient way to the individual ports.
TCP:
The Transmission Control Protocol is a transport protocol which enables
the data exchange between network devices. It works „connection-
oriented", which means that the data transmission is secured.
UDP:
The User Datagram Protocol is a transport protocol which enables the data
exchange between network devices. It operates „connectionless", i.e. the
data transmission is unsecured.
URL:
The "Uniform Resource Locator" refers to the address at which a service can
be found in the web browser. In this manual the IP address of the device is
mostly loaded as URL.
VPN:
Virtual Private Network: Logical connections (so-called tunnels) are set over
existing unsecured networks. The end points of these connections („tunnel
ends") and the devices behind can be considered as own logical network. A
very high degree of security of interception and manipulation can be
achieved by encrypt
ally authenticating the users of this logical network.
WAN:
The Wide Area Network is a network of terminals being a long way away
from each other.
56
of an IP address and of a port (cp. Address:
er)
is „intelligent", i.e. it can memorize the MAC addresses
ected to a port and it directs the data traffic in a more effi-
ing the data transmission via the tunnels and by mutu-
INSYS GPRS 5.1
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