This is a question do you know it
So I would like a private part that I would use anonymously and a public part everyone is allowed to know. AND FOR THE LOVE OF GOD DON'T RECOMMEND QUEBES it isn't good at handling GPUs that well and I do have 2 machines like one server and one client but what would be the best setup (and no 2 physical laptops to be carried arround is not a solution neither is dualboot on 1TB)... so let me know
Someone already said the firewall, and that’s the most straightforward answer, but there’s lots of stuff a server can be used for and most of those have some facility for making a distinction between unauthenticated users and authenticated ones. So as a second recommendation: use the permissions system.
What are you actually trying to do?