TP-Link TL-ER6120 manual Appendix C Glossary, Description, AH （Authentication Header ）

Appendix C Glossary

	Glossary			Description
	DSL (Digital Subscriber			A technology that allows data to be sent or received over
	Line)			existing traditional phone lines.
				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.
A
	ARP （ Address Resolution			Internet protocol used to map an IP address to a MAC address.
	Protocol）
				A security protocol that provides data authentication and
	AH（Authentication Header）		optional anti-replay services. AH is embedded in the data to be
				protected (a full IP datagram).
	DDNS （ Dynamic Domain			The capability of assigning a fixed host and domain name to a
	Name Server）			dynamic Internet IP address.
	DHCP （ Dynamic	Host		A protocol that automatically configure the TCP/IP parameters
	Configuration Protocol）			for the all the PCs that are connected to a DHCP server.
D
				A Demilitarized Zone allows one local host to be exposed to the
	DMZ（Demilitarized Zone）		Internet for a special-purpose service such as Internet gaming
				or videoconferencing.
	DNS（Domain Name			An Internet Server that translates the names of websites into IP
	Server）			addresses.
	ESP（Encapsulating			Security protocol that provides data privacy services, optional
E				data authentication, and anti-replay services. ESP encapsulates
	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.
G	GMT （ Greenwich	Mean		It is a term originally referring to mean solar time at the Royal
				Observatory in Greenwich, London.
	Time）
			-161-