D-Link NetDefend DFL-CP310 User Manual page 470

Glossary of Terms
anyone knowing about it.
Sometimes, tiny programs are
'planted' on the computer that are
designed to watch out for, seize and
then transmit to another computer,
specific types of data.
D
DHCP
Any machine requires a unique IP
address to connect to the Internet
using Internet Protocol. Dynamic
Host Configuration Protocol
(DHCP) is a communications
protocol that assigns Internet
Protocol (IP) addresses to computers
on the network.
DHCP uses the concept of a "lease"
or amount of time that a given IP
address will be valid for a computer.
DMZ
A DMZ (demilitarized zone) is an
internal network defined in addition
to the LAN network and protected
by the NetDefend firewall.
DNS
The Domain Name System (DNS)
refers to the Internet domain names,
or easy-to-remember "handles", that
are translated into IP addresses.
An example of a Domain Name is
'www.sofaware.com'.
454
Domain Name System
Domain Name System. The Domain
Name System (DNS) refers to the
Internet domain names, or easy-to-
remember "handles", that are
translated into IP addresses.
An example of a Domain Name is
'www.sofaware.com'.
E
Exposed Host
An exposed host allows one
computer to be exposed to the
Internet. An example of using an
exposed host would be exposing a
public server, while preventing
outside users from getting direct
access form this server back to the
private network.
F
Firmware
Software embedded in a device.
G
Gateway
A network point that acts as an
entrance to another network.
H
Hacking
An activity in which someone breaks
into someone else's computer
system, bypasses passwords or
licenses in computer programs; or in
D-Link NetDefend firewall User Guide