Glossary

DSL is a data transmission technique in which a connection to the Internet can be run at 1.5 Mbps over normal telephone lines. A DSL connection is provided by an Internet Service Provider. It requires a DSL modem.

Dynamic IP address

A dynamic IP address is assigned to a network component automatically via DHCP. Depending on the setting for the Lease time the IP address of a network component can change every time it logs on or in certain time intervals.

See also: Static IP address

DynDNS

Dynamic DNS

Domain Name Service (DNS) is used to assign Domain names and IP addresses. For Dynamic IP addresses this service is now enhanced with so-called Dynamic DNS (DynDNS). This permits the use of a PC with a changing IP address as a Server on the Internet. DynDNS ensures that a service can always be addressed on the Internet under the same Domain name regardless of the current IP address.

Encryption

Encryption protects confidential information against unauthorised access. With an encryption system data packets can be sent securely over a network. The Gigaset Router WEP encryption for secure data transmission over wireless networks.

Ethernet

Ethernet is a network technology for local networks (LAN) defined by IEEE as Standard IEEE 802.3. Ethernet uses a base band cable with a transmission rate of 10 or 100 Mbps.

Firewall

Firewalls are used by network operators as protection against unauthorised external access. This involves a whole bundle of hardware and software actions and technologies that monitor and control the data flow between the private network to be protected and an unprotected network such as the Internet.

See also: NAT, SPI

Flat rate

Flat rate is a particular billing system for Internet connections The Internet Service Provider charges a monthly fee regardless of the duration and number of logins.

Full duplex

Data transmission mode in which data can be sent and received at the same time. See also: Half duplex

Gateway

A Gateway is a device for connecting networks with completely different architectures (addressing, protocols, application interfaces etc.). Although it is not totally correct, the term is also used as a synonym for Router.

Global IP address

See Public IP address

Half duplex

Operating mode for data transfer. Only one side can receive or send data at a time. See also: Full duplex

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