Comtrend Corporation CT-5365 Installation Manual page 18

Glossary
ADSL:
Asymmetric Digital Subscriber Line. It is a
digital line for accessing Internet at high
speed.
Antivirus:
An application that detects and removes
any computer virus and other malicious
programs.
DHCP (Dynamic Host Configuration
Protocol):
A protocol that allows the hosts of a
network to obtain the IP configuration
settings automatically.
DNS (Domain Name System):
Domain Name Server. The server transla-
tes a domain name (the name of a machi-
ne) into its corresponding IP address.
Encryption or cryptography:
The science that enables one to encode
and decipher information using techniques
that make it possible to exchange messa-
ges in a safe and secure way, because they
can only be read by the persons to whom
they are addressed.
Ethernet cable:
A cable that is used to transmit data at
high speed in Local Area Networks (LAN).
Firewall:
A hardware or software element that is
used in a computer network to control
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and manage the network traffic, either
allowing it or rejecting it, according to the
network policies defined by the organi-
sation that manages the network. It may
block the establishment of the connection
to the Internet.
Fixed / Dynamic IP addressing:
It indicates how Movistar assigns the IP
address to your line. If every time that your
router starts a session it can be assigned a
different IP address, this indicates that your
service includes dynamic addressing, which
is the default type of addressing. However,
if you are always assigned the same IP
address, then your IP addressing service is
fixed or static.
Microfilter:
It is an element which filters the ADSL
signal and separate it from the phone
signal, so that it is possible to make phone
calls and surf at the same time without
interruptions or drops.
PCMCIA:
It is a hardware element that is normally
used in laptop computers to expand their
capacities. The most common case is that
of wireless network adapters, which are of
this type.
Ports:
Physical or logical connections for sending
or receiving data. It allows a program to
communicate via the network.