leon
openssl req -x509 -nodes -days 3560 -newkey rsa:1024 -keyout /etc/ssl/private/pure-ftpd.pem -out /etc/ssl/private/pure-ftpd.pem
Execute this command to make an attempt and enter the information as prompted.
After the certificate is generated, the system directly replaces the original certificate and restarts pure-ftp.