Mapping ports means exposing the designated or all ports of the LAN host to the external network. The IP and port of the router accessed in the external network will be forwarded to the LAN host set in the route. The setting method is as follows:

Enter http:/192.168.1in the browser to enter the router setup page.

Take the picture as an example, click on the virtual server, where the service port refers to the port you want to forward, and the intranet IP is the IP you want to forward to the designated host in the intranet. Settings cannot conflict (a host IP can open multiple ports at the same time, but a port cannot forward multiple hosts at the same time). Check enabled after setting. The specific diagram is as follows:

If you want to forward all ports to the hosts specified in the intranet, please set up DMZ host forwarding in the router. DMZ completely exposes the hosts in the local area network to the wide area network. Take the Reko router as an example (as shown above, click on the DMZ host). Other reasons are the same, but the interface is different, as shown in the figure. Find the forwarding function in the router (DMZ host) and set it as shown in the figure:

After saving, you link your router's public IP in the external network, and the router will automatically forward it to your internal server.