Hello, I'm currently barring access to a test site by excluding everyone except visitors whose IP address has been saved in the filter. It's onerous. I did not understand reading the manual if it was possible with ISPConfig to make this type of site accessible only to the administrator and its "clients" (much like we can do in WordPress and other script ). If so, how?
You can password protect the website, see protected folders and protected folder users in the ISPConfig sites module.