Appendix C Glossary
Glossary
Description
A
D
E
F
| Application Level Gateway (ALG) is application specific | |
ALG （ Application Layer translation agent that allows an application on a host in one | ||
Gateway） | address realm to connect to its counterpart running on a host in | |
different realm transparently. | ||
| ||
ARP （ Address Resolution Internet protocol used to map an IP address to a MAC address.
A security protocol that provides data authentication and AH（Authentication Header）optional
protected (a full IP datagram).
DDNS （ Dynamic Domain The capability of assigning a fixed host and domain name to a dynamic Internet IP address.
Host A protocol that automatically configure the TCP/IP parameters for the all the PCs that are connected to a DHCP server.
A Demilitarized Zone allows one local host to be exposed to the DMZ（Demilitarized Zone） Internet for a
| or videoconferencing. | |
|
| |
DNS（Domain Name | An Internet Server that translates the names of websites into IP | |
Server） | addresses. | |
| ||
|
| |
DSL(Digital Subscriber | A technology that allows data to be sent or received over | |
Line) | existing traditional phone lines. | |
| ||
|
| |
ESP（Encapsulating | Security protocol that provides data privacy services, optional | |
data authentication, and | ||
Security Payload） | ||
the data to be protected. | ||
| ||
|
| |
FTP（File Transfer | Application protocol, part of the TCP/IP protocol stack, used for | |
Protocol） | transferring files between network nodes. |