Warning #1
Warning: Found enabled xinetd service: /etc/xinetd.d/ftp_psa Warning: Found enabled xinetd service: /etc/xinetd.d/poppassd_psa Warning: Found enabled xinetd service: /etc/xinetd.d/smtp_psa Warning: Found enabled xinetd service: /etc/xinetd.d/smtps_psa Warning: Found enabled xinetd service: /etc/xinetd.d/submission_psa
Warning #2
Unable to find 'lsattr' command - all file immutable-bit checks will be skipped.
https://sourceforge.net/p/rkhunter/mailman/message/33159245/
Warning #3
No output found from the lsmod command or the /proc/modules file
https://sourceforge.net/p/rkhunter/mailman/message/20285811/
Warning #4
Warning: The SSH and rkhunter configuration options should be the same:
https://unix.stackexchange.com/questions/194087/rkhunter-warning-about-ssh-root-access-when-that-access-is-not-allowed-on-the-sy