Operation Manual

Vigor120 Series User’s Guide

Enable Check this box to enable such port redirection setting.

Mode Two options (Single and Range) are provided here for you to

choose. To set a range for the specific service, select Range. In

Range mode, if the public port (start port and end port) and the

starting IP of private IP had been entered, the system will calculate

and display the ending IP of private IP automatically.

Service Name Enter the description of the specific network service.

Protocol Select the transport layer protocol (TCP or UDP).

WAN IP Select the WAN IP used for port redirection. There are eight WAN

IP alias that can be selected and used for port redirection. The

default setting is All which means all the incoming data from any

port will be redirected to specified range of IP address and port.

Public Port Specify which port can be redirected to the specified Private IP

and Port of the internal host. If you choose Range as the port

redirection mode, you will see two boxes on this field. Simply type

the required number on the first box. The second one will be

assigned automatically later.

Private IP Specify the private IP address of the internal host providing the

service. If you choose Range as the port redirection mode, you will

see two boxes on this field. Type a complete IP address in the first

box (as the starting point) and the fourth digits in the second box

(as the end point).

Private Port Specify the private port number of the service offered by the

internal host.

Active Check this box to activate the port-mapping entry you have

defined.

Note that the modem has its own built-in services (servers) such as Telnet, HTTP and FTP

etc. Since the common port numbers of these services (servers) are all the same, you may

need to reset the modem in order to avoid confliction.

For example, the built-in web configurator in the modem is with default port 80, which may

conflict with the web server in the local network, http://192.168.1.13:80. Therefore, you need

to change the modem’s http port to any one other than the default port 80 to avoid