Axesstel MV400 - Manual (Page 45)

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Configuring Port Forwarding
Clicking on the header of the “Port Forwarding” tab will take you to the “Port
Forwarding” header page. This 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 Router 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 “Port
Forwarding” function for a specific application. You will need to contact the
application vendor to find out which port settings you need.
Note: This advanced feature should be employed by advanced users only.
Disable Port Forwarding
To disable Port Forwarding, uncheck the box “Enable Port Forwarding”.
Entering Settings into the Port Forwarding
To enter settings, select the service from the dropdown box “Protocol”. You will
see a list of common applications (FTP, HTTP, Net-Meeting…). Select the
desired applications, enter the IP address and the port number in the space
provided for the internal (server) machine and click “Apply”. 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.