Linksys WRV54G User Manual page 43

Wireless-G VPN Broadband Router
When finished making your changes on this tab, click the Save Settings button to save these changes, or click
the Cancel Changes button to undo your changes.
UPnP Forwarding
The UPnP screen displays preset application settings as well as options for customization of port services for
other applications. (See Figure 6-28.)
• Application. Ten preset applications are preset. You can specify up to five additional applications in the
available fields.
The preset applications are among the most widely used Internet applications. They include the following:
• FTP (File Transfer Protocol) A protocol used to transfer files over a TCP/IP network (Internet, UNIX, etc.).
For example, after developing the HTML pages for a website on a local machine, they are typically
uploaded to the web server using FTP.
• Telnet A terminal emulation protocol commonly used on Internet and TCP/IP-based networks. It allows a
user at a terminal or computer to log onto a remote device and run a program.
• SMTP (Simple Mail Transfer Protocol) The standard e-mail protocol on the Internet. It is a TCP/IP protocol
that defines the message format and the message transfer agent (MTA), which stores and forwards the
mail.
• DNS (Domain Name System) The way that Internet domain names are located and translated into IP
addresses. A domain name is a meaningful and easy-to-remember "handle" for an Internet address.
• TFTP (Trivial File Transfer Protocol) A version of the TCP/IP FTP protocol that has no directory or password
capability.
• Finger A UNIX command widely used on the Internet to find out information about a particular user, such
as a telephone number, whether the user is currently logged on, and the last time the user was logged on.
The person being "fingered" must have placed his or her profile on the system in order for the information
to be available. Fingering requires entering the full user@domain address.
• HTTP (HyperText Transport Protocol) The communications protocol used to connect to servers on the
World Wide Web. Its primary function is to establish a connection with a web server and transmit HTML
pages to the client web browser.
• POP3 (Post Office Protocol 3) A standard mail server commonly used on the Internet. It provides a
message store that holds incoming e-mail until users log on and download it. POP3 is a simple system
Chapter 6: Configuring the Router
The Applications and Gaming Tab
Figure 6-28: UPnP Forwarding
38