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Glossary
Gigaset SE555 WLAN dsl / en / A31008-M1037-B181-1-7619 / glossary.fm / 27.06.2006
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Client
A client is an application that requests a service from a server. For example, an HTTP cli-
ent on a PC in a local network requests data, i.e. Web pages from an HTTP server on the
Internet
. Frequently the network component (e.g. the PC) on which the client applica-
tion is running is also called a client.
DHCP
Dynamic Host Configuration Protocol
DHCP handles the automatic assignment of
IP addresses
to network components. It was
developed because of the complexity involved in defining IP addresses in large networks
– especially the
Internet
– as participants frequently move, drop out or new ones join.
A DHCP server automatically assigns the connected network components (DHCP
Cli-
ents
)
Dynamic IP addresses
from a defined
IP pool range
thus saving a great deal of con-
figuration work. In addition, the address blocks can be used more effectively: since not
all participants are in 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 SE555 WLAN dsl includes a DHCP server and uses it to assign automatic IP
addresses to PCs in the local network. You can specify that the IP addresses for certain
PCs are never changed.
DHCP server
See
DHCP
DNS
Domain Name System
DNS permits the assignment of IP addresses to computers or
Domain names
that are
easier to remember. A DNS server must 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 PCs in the local network and the superordinate name servers,
which again know addresses or the next superordinate name servers.
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
.
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