Actiontec-electronic Actiontec Wireless DSL Gateway GT704WG Uživatelský manuál stáhnout pdf (Strana 114)

109

Service Acronyms

The following information is related to the Firewall options (High, Medium,

and Low) section in the “Advanced Setup” chapter of this manual. This appendix

explains the meaning of the service acronyms included with the various levels of

firewall security, and the UDP and TCP ports used by each service.

Service Acronym Definitions

DNS

Domain Name System. A data query system used to translate host names into

Internet addresses (i.e., www.somewebsite.com translates to 888.999.000.111).

Uses UDP 53 and TCP 53.

EPMAP

EndPoint Mapper. Uses UDP 135 and TCP 135.

FTP

File Transfer Protocol. A protocol used to transfer files over the Internet. Uses

TCP 20 and 21.

HTTP

HyperText Transfer Protocol. This protocol delivers information over the

Internet, and is used when a computer connects to a Web site via an Internet

browser. Uses TCP 80.

HTTPS

HyperText Transfer Protocol using Secure Socket Layer. A secure version of the

protocol that delivers information over the Internet. Uses UDP 443 and TCP 443.

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Actiontec-electronic Actiontec Wireless DSL Gateway GT704WG Uživatelský manuál Strana 114