vsftpd-ftps_implicit.conf

#enable FTPS
ssl_enable=YES
allow_anon_ssl=NO
require_ssl_reuse=NO
force_local_data_ssl=YES
force_local_logins_ssl=YES
ssl_tlsv1=YES
ssl_sslv2=NO
ssl_sslv3=NO
rsa_cert_file=/etc/vsftpd/vsftpd.pem

## Enable active mode
port_enable=YES
connect_from_port_20=YES
ftp_data_port=20

#enable implicit SSL
implicit_ssl=true
listen_port=990