Sony SE366 - Manual (Page 108)

108
Glossary
Gigaset SE366 WLAN / englisch / A31008-M1063-R101-4x-7619 / glossary.fm / 13.11.2008
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DNS
Domain Name System
DNS permits the assignment of IP addresses to computers or
Domain names , which 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 is based on a hierar-
chical 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 next higher name
servers, which again know addresses and the next higher name servers.
DNS server
See
DNS
Domain name
The domain name is the reference to one or more Web servers on the
Internet , e.g.
gigaset.com. The domain name is mapped to the respective IP address via the DNS serv-
ice.
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 so severely that the network resources are no longer available.
A typical hacker attack involves a remote computer claiming that it is acting on behalf
of a paralysed computer, for example, and receiving the data intended for you.
DSL
Digital Subscriber Line
DSL is a data transmission technology in which a connection to the
Internet can be run
over normal telephone lines. A DSL connection is supplied by an Internet Provider . It
requires a DSL modem.
DTIM
Delivery Traffic Indication Message
A DTIM is a signal that is sent by an access point as part of a
Beacon to a client device in
power-saving mode to indicate that a data packet is ready for delivery. The DTIM interval
defines the frequency with which a DTIM appears in a series of beacon packets.