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9.4 Port forwarding
9.4.1 Overview
By default, internet users cannot actively access the LAN of the router.
The port forwarding function opens a port of the router, and binds the LAN server to the port using
the server’s IP address and intranet service port. All access requests to the WAN port of the router
will be directed to the server. Therefore, the server within the LAN can be accessed by internet
users and the LAN can be free from attacks from the internet.
For example, the port forwarding function enables internet users to access web servers or FTP
servers within the LAN.
To access the configuration page, log in to the web UI of the router, and choose Advanced > Port
Forwarding.
Parameter description
It specifies the IP address of a server that resides on the LAN.
It specifies the service port number of the internal server.
You can either choose a port from the drop-down list or specify a port manually.
It specifies the service port number for internet users to access a specified service.
When the internal port is selected or specified, the external port will be occupied
automatically. You can also change it as required.
It specifies the protocol that specified service uses.
Both indicates that both TCP and UDP are used. If you are uncertain about it, Both is
recommended.
: It is used to add a port forwarding rule.
: It is used to delete a port forwarding rule.
9.4.2 Enable internet users to access LAN resources using an IP
address
Scenario: You have set up an FTP server within your LAN.
Goal: Open the FTP server to internet users and enable family members who are not at home to
access the resources of the FTP server from the internet.
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