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Glossary
Tunneling
Tunneling is a procedure in which the data traffic of one
Protocol
is transmitted with the
help of a different protocol. For example, data packets of a private network can be
packed into
IP
packets and sent over the Internet as if through a tunnel. Tunneling pro-
cedures are used nowadays for the secure transmission of data in a Virtual Private Net-
work (VPN). The IP packets from the local network are encrypted using a tunneling pro-
tocol (e. g. PPTP) before being sent over the Internet.
UDP
User Datagram Protocol
UDP is a
Protocol
of the
TCP/IP
protocol family that handles data transport between com-
munication partners (applications). Unlike TCP, UDP is a non-session based protocol. It
does not establish a fixed connection. The data packets, so-called datagrams, are sent
as a Broadcast. The recipient is responsible for making sure the data is received. The
sender is not notified about whether it is received or not.
UPnP
Universal Plug and Play
UPnP technology is used for the spontaneous linking of home or small office networks.
Devices that support UPnP carry out their network configuration automatically once
they are connected to a network. They also provide their own services or use services of
other devices on the network automatically.
URL
Universal Resource Locator
Globally unique address of a Domain on the Internet.
Virtual server
A virtual
Server
provides a service on the Internet, that runs not on itself, but on another
network component. The Gigaset SE505 dsl/cable can be configured as a virtual server.
It will then direct incoming calls for a service via
Port Forwarding
directly to the appro-
priate
Port
of the network component in question.
VPN
Virtual Private Network
A VPN is a network connection in which the data are transmitted over the
Internet
using
special
Tunneling
protocols (e.g. PPTP, L2TP, IPSec) securely, i.e. encrypted. VPNs are
used to connect private networks at different locations with each other without having
to lease a transmission line. The Internet is used instead.
WAN
Wide Area Network
A WAN is a network that is not restricted to one particular area, such as the Internet. A
WAN is run by one or more public providers to enable private access. You access the
Internet via an
Internet Service
Provider.
WEP
Wired Equivalent Privacy
WEP is a security protocol defined in the
IEEE 802.11
standard. It is used to protect wire-
less transmissions in a
WLAN
against unauthorised access through
Encryption
of the
data transmitted.
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