Service acronyms – Actiontec GT701D User Manual User Manual

Page 78

Service Acronyms

The following information is related to the Firewall options (Custom, High, Medium,
and Low) section in the “Configuring Security Settings” chapter of this manual. This
appendix explains the meaning of the service acronyms included with the various lev-
els 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

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.