Appendix B Glossary
Appendix B: Glossary
Glossary
Description
A
ALG (Application Layer
Gateway)
Application Level Gateway (ALG) is application specific translation
agent that allows an application on a host in one address realm to
connect to its counterpart running on a host in different realm
transparently.
ARP (Address Resolution
Protocol)
Internet protocol used to map an IP address to a MAC address.
C
CPE (Customer Premise
Equipment)
A terminal located at a subscriber's premises and connected with a
carrier's telecommunication channel at the demarcation point. The
point is established in a building or complex to separate customer
equipment from the equipment located in either the distribution
infrastructure or central office of the Communications Service Provider.
D
DDNS (Dynamic Domain
Name Server)
The capability of assigning a fixed host and domain name to a dynamic
Internet IP address.
DFS (Dynamic Frequency
Selection)
A method applied in wireless networks, which is used for radar
avoidance and is supported by the novel IEEE 802.11h wireless local
area network standard.
DHCP (Dynamic Host
Configuration Protocol)
A protocol that automatically configures the TCP/IP parameters for all
the PCs that are connected to a DHCP server.
DMZ (Demilitarized Zone)
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 (Domain Name Server)
An Internet Server that translates the names of websites into IP
addresses.
DoS (Denial of Service)
A hacker attack designed to prevent your computer or network from
operating or communicating.
F
FTP (File Transfer Protocol)
Application protocol, part of the TCP/IP protocol stack, used for
transferring files between network nodes.
H
HTTP (Hypertext Transfer
Protocol)
The protocol used by Web browsers and Web servers to transfer files,
such as text and graphic files.
- 89 -
