| Port Range Forwarding |
Application Name
Each drop-down menu offers a choice of
ten preset applications (select None if you do not want
to use any of the preset applications). Select up to five
preset applications. For custom applications, enter the name
of your application in one of 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.
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.
The way that
Internet domain names are located and translated into IP
addresses. A domain name is a meaningful and easy-to-remember
andle?for an Internet address.
- TFTP(Trivial File Transfer Protocol)
A version of the TCP/IP FTP protocol that
has no directory or password capability.
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
ingered?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 with little
selectivity. All pending messages and attachments are
downloaded at the same time. POP3 uses the SMTP messaging
protocol.
- NNTP(Network News Transfer Protocol)
The
protocol used to connect to Usenet groups on the Internet.
Usenet newsreaders support the NNTP protocol.
- SNMP(Simple Network Management Protocol)
A widely used network monitoring and control
protocol. Data is passed from SNMP agents, which are hardware
and/or software processes reporting activity in each network
device (hub, router, bridge, etc.) to the workstation console
used to oversee the network. The agents return information
contained in a MIB Management Information Base), which is a
data structure that defines what is obtainable from the device
and what can be controlled (turned off, on, etc.).
Start/End
This is the port range. Enter the port
number or range of external ports used by the server or
Internet application. Check with the software documentation of
the Internet application for more information.
Protocol
Select the protocol(s) used for this
application, TCP and/or UDP.
To IP Address
For each application, enter the IP
address of the PC running the specific application.
Enabled
Click the Enabled checkbox to
enable port forwarding for the relevant application.
|