Port forwarding or port mapping is a network address translation (NAT) application that redirects a communication request from a combination of address and port number to another while packets traverse a network gateway, such as a router or a firewall. This technique is most commonly used to make services on a host residing in a protected or masked (internal) network available to hosts on the opposite side of the gateway (external network), by reassigning the destination IP address and port number of the communication to an internal host.

To proceed with port forwarding, the following steps are taken:

1.- Access the device with the following default data:

2.- When we enter our credentials, we can access the Router Dashboard. On our left side, we can see the following menu; we select 'Router'.
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3.- "It will open the following menu, in which we will go to the next section to configure port forwarding.

Advanced -> Port Mapping

4.- It will show the following screen, then click on 'Add' to create our port forwarding.
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5.- We fill in the information for the ports we want to open, for example:

This way, port forwarding is complete.