Glossary

NATNetwork Address Translation

NAT is a method for converting IP addresses (Private IP addresses) within a network into one or several 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. Because of this security function, NAT is frequently used as part of the Firewall of a network. If you want to make services on a PC in the local network available on the Internet despite NAT, you can configure the Gigaset SX763 WLAN dsl 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 data and peripherals. A general distinction is made between local networks (LANs) and wide-area networks (WANs).

Network adapter

The network adapter is the hardware device that creates the connection between a network component and a local network. The connection can be wired or wireless. An Eth- ernet network card is an example of a wired network adapter. The Gigaset PC Card 108 and the Gigaset USB Adapter 108 are examples of wireless network adapters.

A network adapter has a unique address, the MAC address.Public IP address

The public IP address (also known as the global IP address) is a network component's address on the Internet. It is assigned by the Internet service provider. Devices that create a link from a LAN to the Internet, such as the Gigaset SX763 WLAN dsl, have a public and a Private IP address.

PBXPrivate Branch Exchange

PBX is the English acronym for a public branch exchange, which allows connection and configuration of extensions and telephone functions.

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.

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