Actiontec GT701D User Manual - Page 78

Service Acronyms

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Service Acronyms C 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 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. 75

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75
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
D
omain
N
ame
S
ystem. 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
E
nd
P
oint
Map
per. Uses
UDP
135 and
TCP
135.
FTP
F
ile
T
ransfer
P
rotocol. A protocol used to transfer files over the Internet. Uses
TCP 20
and
21
.
HTTP
H
yper
T
ext
T
ransfer
P
rotocol. 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
H
yper
T
ext
T
ransfer
P
rotocol using
S
ecure Socket Layer. A secure version of the
protocol that delivers information over the Internet. Uses
UDP
443 and
TCP
443.
C