How to make your mistake?

Question

FTP

Hello.
I use proftpd, the goal is this:
there is a list of files that I want to make so that it cannot be opened in ftp, and I would write an error "This file can only be edited through the control panel, section configs". That is the most difficult thing, how to make such a mistake.
If this cannot be done with proftpd, then you will have to think about your own FTP server.

Answer 1

I don't know if it will work, you can try setting rwxrwx --- permissions