(The remote control software vncvnc is the only pure green remote control software that has not been hanged. Note that it is a foreign language version. I am still using it. During installation, you will be allowed to choose: the first option is the server, and the second is the client. Both are installed with one software. Make no mistake, the second option is what we want to install ourselves. As long as it is set up, customers, servers and any firewall can penetrate, and all parts of the world can be connected. It is a good tool for network maintainers.)