ActionTec Wireless DSL Gateway GT704WG-QW04, User Manual

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Actiontec DSL Gateway User Manual
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Appendix f Firewall Security Level Services
Off
If
Off
is selected, only NAT
( N etwork A ddress T ranslation) security is active.
Service Acronym Definitions
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.
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
).
ftp
F ile T ransfer P rotocol. A protocol used to transfer files over the Internet.
telnet
An Internet communications protocol enabling one computer to function as a
terminal working from another (remote) computer.
smtp
S imple M ail T ransfer P rotocol. A protocol used to transfer E-mail between
computers over the Internet. Can be used to send and receive mail.
pop3
P ost O ffice P rotocol 3. Another protocol used to transfer E-mail between
computers. Usually employs a pop3 server, and is used to receive mail only.
nntp
N
etwork
N
ews
T
ransfer
P
rotocol. A protocol used to distribute and retrieve
news articles over the Internet.