Table of Contents
Advertisement
Glossary
Mbps
Million bits per second
The transmission speed in a network.
MRU
Maximum Receive Unit
The MRU defines the maximum user data volume within a data packet.
MTU
Maximum Transmission Unit
The MTU defines the maximum length of a data packet that can carried over the net-
work at a time.
NAT
Network Address Translation
NAT is a method for implementing IP addresses (mostly
Private IP
addresses) in a net-
work on one or more
Public IP addresses
on the Internet. With NAT several network com-
ponents 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 reg-
istered on the Internet. Because 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 avail-
able on the Internet despite NAT, you can configure the Gigaset SE505 dsl/cable as a
Vir-
tual
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 area networks (LAN) and wide-area networks (WAN).
Network adapter
The network adapter is the hardware device that implements the connection of a net-
work component to a local network. An Ethernet network card is an example of a wired
network adapter. The Gigaset PC Card 54 and the Gigaset PCI Card 54 are examples of
wireless network adapters.
A network adapter has a unique address, the
MAC
address.
Port
Data is exchanged between two applications in a network across a port. The port
number addresses an application within a network component. The combination of
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 whenever they need one.
Port Forwarding
In Port Forwarding the Gigaset SE505 dsl/cable directs data packets from the
Internet
that are addressed to a particular
Port
to the corresponding port of the appropriate net-
work component. This enables servers within the local area network to offer services on
the Internet without them needing a
Public IP
address.
See also:
Virtual server
129
Advertisement
Table of Contents
