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Cable/DSL Router User Guide
54
Appendix D: Glossary
DDNS
(
D
ynamic
D
omain
N
ame
S
ystem)
-
The capability of assigning a fixed host and domain
name to a dynamic Internet IP address.
DHCP
(
D
ynamic
H
ost
C
onfiguration
P
rotocol)
-
A protocol that automatically configure the TCP/IP
parameters for the all the PCs that are connected to a DHCP server.
DMZ
(
D
e
m
ilitarized
Z
one)
-
A Demilitarized Zone allows one local host to be exposed to the
Internet for a special-purpose service such as Internet gaming or videoconferencing.
DNS
(
D
omain
N
ame
S
erver)
-
An Internet Server that translates the names of websites into IP
addresses.
Domain Name -
A descriptive name for an address or group of addresses on the Internet.
DoS
(
D
enial
o
f
S
ervice) - A hacker attack designed to prevent your computer or network from
operating or communicating.
DSL
(
D
igital
S
ubscriber
L
ine)
-
A technology that allows data to be sent or received over existing
traditional phone lines.
ISP
(
I
nternet
S
ervice
P
rovider)
-
A company that provides access to the Internet
MTU
(
Maximum Transmission Unit
)
-
The size in bytes of the largest packet that can be
transmitted.
NAT
(
N
etwork
A
ddress
T
ranslation)
-
NAT technology translates IP addresses of a local area
network to a different IP address for the Internet.
PPPoE
(
P
oint to
P
oint
P
rotocol
o
ver
E
thernet)
-
PPPoE is a protocol for connecting remote hosts
to the Internet over an always-on connection by simulating a dial-up connection.
L2TP
(
L
ayer
2
T
unneling
P
rotocol)
-
The L2TP Protocol is used for integrating multi-protocol
dial-up services into existing Internet Service Providers Point of Presence.