In order to better understand, first explain the concept of port forwarding. In the network, each device has an IP address to identify the unique position of the device in the network; At the same time, applications on the device will also use port numbers to identify different services. For example, Web service uses port 80, FTP service uses port 2 1, and so on. When devices are in a local area network, they can communicate with each other directly because they are in the same network. However, when the device needs to provide external network services, it needs port forwarding. Port forwarding refers to directing external network traffic to a port on a device in the internal network, so as to realize the function of external network accessing internal network services.

Back to the question, because the optical cat of Fujian Unicom operator has no super administrator password, ordinary users have no functions such as port forwarding, port mapping and virtual server after logging in, so they can't directly forward ports. If the optical cat can't do brouter, then other devices can't be used for port forwarding.

However, if port forwarding is needed, there are still some methods to try. For example, you can install a virtual machine on a PC, then use the virtual machine as a server, and then use port mapping software for port forwarding. In addition, you can also try to use another router, set the optical cat to bridge mode, and then forward the port through the router.

In short, because different brands and models of light cats may be different, the specific solutions need to be tried and adjusted according to the actual situation.

I hope my answer is helpful to you. Thank you.