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Appendix Glossary
DNS
Domain Name Server: it can provide the service that network node name can be translated to network IP
address in the internet.
DDNS
Dynamic Domain Name Server.
DHCP
Dynamic Host Configuration Protocol.
DMZ
Demilitarized Zone.
Internet
Global network, Use to exchange data, news and viewpoints within millions of computer.
IP Address
32 bit address, Use to identify one computer in TCP/IP.
LAN
Use to connect some communication equipment (computer, MODEM and printer) within one room,
school or other limited region.
MAC Address
The Media Access Control (MAC) address is a unique number assigned by the manufacturer to any
Ethernet networking device, such as a network adapter, that allows the network to identify it at the
hardware level. For all practical purposes, this number is usually permanent. Unlike IP address, which
can change every time a computer log in the network, the MAC address of a device stays the same,
making it a valuable identifier for the network.
NAT
Network Address Translation.
Protocol
Communication protocol: it is a rule that network equipment must follow for mutual communicating to
transfer, transmit and receive data.
SNTP
Simple Network Time Protocol.