Gigaset SE105 Owner's Manual page 106

Glossary
Specification of the transmission speed in a network.
MTU
Maximum Transmission Unit
The MTU defines the maximum length of a data packet that can transported over the
network at a time.
NAT
Network Address Translation
NAT is a method for implementing IP addresses (mostly Private IP addresses) in a
network on one or more Public IP addresses on the Internet. With NAT several network
components in a LAN can share the router's public IP address to connect to the Internet.
The network components of the local network are hidden behind the router's IP address
registered on the Internet. As a result of this security function NAT is frequently used as
part of the network Firewall. If you want to make services on a PC in the local network
available on the Internet despite NAT, you can configure the Gigaset Router as a Virtual
server.
Network
A network is a group of devices connected in wired or wireless mode so that they can
share resources such as files and peripherals. A general distinction is made between
local networks (LAN) and wide-area networks (WAN).
Network adapter
The network adapter is the hardware device that realises the connection of a network
component to a local network. The connection can be wired or wireless. A wired
network adapter is for example an Ethernet network card. Wireless network adapters are
for example the Gigaset USB Adapter 11 and the Gigaset PC Card 11.
A network adapter has a unique address, the MAC address.
Port
Data is exchanged between two applications in a network via a Port. The port number
addresses an application within a network component. The combination IP address/port
number uniquely identifies the recipient or sender of a data packet within a network.
Some applications (e. g. Internet services such as HTTP or FTP) work with fixed port
numbers, others are allocated a free port number every time they need one.
Port Forwarding
In Port Forwarding the Gigaset Router directs data packets from the Internet that are
addressed to a particular Port to the corresponding port of the appropriate network
component. This enables servers on the local network to offer services on the Internet
without them needing a Public IP address.
See also: Virtual server
PPPoE
Point-to-Point Protocol over Ethernet
PPPoE is a Protocol for connecting network components in a local Ethernet network to
the Internet via a modem.
PPTP
Point-to-Point Tunneling Protocol = Punkt-zu-Punkt-Tunneling-Protokoll§
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