Postscriptum
My motivation here is related to the point 1. of the following issue: https://github.com/EXALAB/AnLinux-App/issues/397 The current is to overwrite the /etc/ssh/sshd_config by a file that contents only: PermitRootLogin yes So putting that file in /etc/ssh/sshd_config.d should do the job but I don't know what could be the result if the /etc/ssh/sshd_config content the opposite in the following of the Include directive.