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Actiontec 54 Mbps Wireless DSL Gateway User Manual
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Appendix F Firewall Security
Basic Security Level
NAT (Network Address Translation) only.
Service Acronym Definitions
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.
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).
ftp
File Transfer Protocol. 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
Simple Mail Transfer Protocol. A protocol used to transfer E-mail between
computers over the Internet. Can be used to send and receive mail.
pop3
Post Office Protocol 3. Another protocol used to transfer E-mail between
computers. Usually employs a pop3 server, and is used to receive mail only.
nntp
Network News Transfer Protocol. A protocol used to distribute and retrieve
news articles over the Internet.