TP-LINK TL-ER6120 User Manual Page 166

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Appendix C Glossary
Glossary Description
DSL (Digital Subscriber
Line)
A technology that allows data to be sent or received over
existing traditional phone lines.
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.
A
AHAuthentication Header
A security protocol that provides data authentication and
optional anti-replay services. AH is embedded in the data to be
protected (a full IP datagram).
DDNS Dynamic Domain
Name Server
The capability of assigning a fixed host and domain name to a
dynamic Internet IP address.
DHCP Dynamic Host
Configuration Protocol
A protocol that automatically configure the TCP/IP parameters
for the all the PCs that are connected to a DHCP server.
DMZDemilitarized 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.
D
DNSDomain Name
Server
An Internet Server that translates the names of websites into IP
addresses.
E
ESPEncapsulating
Security Payload
Security protocol that provides data privacy services, optional
data authentication, and anti-replay services. ESP encapsulates
the data to be protected.
FTPFile Transfer
Protocol
Application protocol, part of the TCP/IP protocol stack, used for
transferring files between network nodes.
G
GMT Greenwich Mean
Time
It is a term originally referring to mean solar time at the Royal
Observatory in Greenwich, London.
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