TP-Link TL-ER604W manual Appendix C Glossary, Description, AH （Authentication Header ）

Appendix C Glossary

	Glossary			Description
				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.
				A Demilitarized Zone allows one local host to be exposed to the
D	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.
	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
E				data authentication, and anti-replay services. ESP encapsulates
	Security Payload）
				the data to be protected.
F	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
	Time）			Observatory in Greenwich, London.
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