Proftpd

• http://www.proftpd.org/
• https://github.com/ChristianBeer/ProFTPd-Admin

Quirks

• use older pem format if use ssh-keygen -e -m PEM -f /etc/proftpd/ssh_host_rsa_key to convert to supported PEM-encoded key
  • FIX: RUN ssh-keygen -A -m PE
  • ssh-keygen -m PEM -f /etc/proftpd/ssh_host_rsa_key -N -t rsa -b 2048
  • https://github.com/proftpd/proftpd/issues/793
  • http://www.proftpd.org/docs/contrib/mod_sftp_sql.html