If you can't, you can ask the broadband master to come to your home to re-register. Generally speaking, your problem can be solved, but generally speaking, it is no problem.
Normally, you can do this, so as long as you restore the factory settings and re-register, you can unlock the restrictions, which is basically the case.
Basic situation of Unicom optical cat port
Usually, routers have firewall function. Internet users can only access the WAN port of your router (connected with ADSL line port) and cannot access the internal server.
In order to allow external users to access the server, it is necessary to make a forwarding setting on the router, that is, the port mapping setting, so that the user's request can reach the game server or the WEB server after reaching the router. This is the port mapping.
At present, all broadband routers have port mapping function, but each router manufacturer takes different function names, some are called virtual servers, and some are called NAT settings.
The setup of port mapping is very simple. For example, to map a WEB server with an IP address of192.168.1.254, just fill in the server's IP address +092. 168. 1.254 and TCP port 80 in the port mapping table of the router.