Belkin N1 VISION Mode D'emploi page 67

Using the Web-Based
Advanced User Interface
Configuring Internal Forwarding Settings
The Virtual Servers function will allow you to route external (Internet) calls
for services such as a web server (port 80), FTP server (Port 21), or other
applications through your N1 Vision to your internal network. Since your
internal computers are protected by a firewall, computers outside your
network (over the Internet) cannot get to them because they cannot be
"seen". A list of common applications has been provided in case you need
to configure the Virtual Server function for a specific application. If your
application is not listed, you will need to contact the application vendor to
find out which port settings you need.
Choosing an Application
Select your application from the drop-down list. Click "Add". The settings
will be transferred to the next available space in the screen. Click "Apply
Changes" to save the setting for that application. To remove an application,
select the number of the row that you want to remove then click "Clear".
Manually Entering Settings into the Virtual Server
To manually enter settings, enter the IP address in the space provided for
the internal (server) machine, the port(s) required to pass (use a comma
between multiple ports), select the port type (TCP or UDP), and click "Apply
Changes". You can only pass one port per internal IP address. Opening
ports in your firewall can pose a security risk. You can enable and disable
settings very quickly. It is recommended that you disable the settings when
you are not using a specific application.
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