If you must expose to the net (which you may do with the games servers) then again, the config guide has you covered, use crowdsec, use https, use random ports, use strong passwords and mfa.

When you say the config guide has you covered. Where is this config guide?

What do you use for scanning for paperless?

You want to charge people to help you?

And then if you can’t find help on Google or are confused with a specific problem, THEN ask your specific question here or somewhere similar.