I install vsftpd on Ubuntu mate. I do everything by this manual:
https://www.digitalocean.com/community/tutorials/how-to-configure-vsftpd-to-use-ssl-tls-on-an-ubuntu-vps
Result is the vsftpd is rununing as process "ps -aux", but if I write "netstat -ltpu" I haven't any ftp connetion in this list.
I don't find any solution on internet. I try reboot system, reinstall vsftpd.
Thanks for help.