Glossary
A DHCP Server automatically assigns the connected network components (DHCP Clients) Dynamic IP addresses from a defined IP address pool thus saving a great deal of configuration work. It also allows address pools to be used more effectively: Since not all participants are on the network at the same time, the same IP address can be assigned to different network components in succession as and when required.
The Gigaset Router includes a DHCP Server and so it can automatically assign IP addresses for the PCs on its local network. You can configure the Lease time so that once an IP address has been assigned it will never change.
DHCP Server
See DHCP
DMZ
Demilitarised Zone
DMZ describes a part of a network that is outside the Firewall. A DMZ is so to speak set up between a network you want to protect (e. g. a LAN) and an insecure network (e. g. the Internet). A DMZ is useful if you want to offer Server services on the Internet which for security reasons are not to be run from behind the firewall or if Internet applications do not work properly behind a firewall. A DMZ permits unrestricted access from the Internet to only one or a few network components, while the other network components remain secure behind the firewall.
DNS
Domain Name System
DNS permits the assignment of IP addresses to computer or Domain names that are easier to remember. A DNS Server has to administer this information for each LAN with an Internet connection. As soon as a page on the Internet is called up, the browser obtains the corresponding IP address from the DNS Server so that it can establish the connection.
On the Internet the assignment of Domain names to IP addresses follows a hierarchical system. A local PC only knows the address of the local Name Server. This in turn knows all the addresses of the computers in the local network and the next higher Name Server, which again knows addresses in its network and that of the next Name Server.
DNS Server
See DNS
Domain name
The Domain name is the reference to one or more Web Servers on the Internet. The Domain name is mapped via the DNS service to the corresponding IP address.
DoS attack
Denial of Service
A DoS attack is a particular form of hacker attack directed at computers and networks with a connection to the Internet. The aim is not so much to steal data but to paralyse the computer or network to such an extent that the network resources are no longer available. A typical hacker attack involves making a remote computer announce that it is acting for the paralysed machine for example and receive the data meant for you.
DSL
Digital Subscriber Line
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