File transfer using FileZilla and other FTP client software fails from the VSFTPD server with the error "vsftpd – GnuTLS error -15: An unexpected TLS packet was received". Refer to solution section for resolution.
Add the following configuration to /etc/vsftpd/vsftpd.conf file and then restart vsftpd service to resolve the issue.
Restart vsftpd service with the following command.
# service vsftpd restart or # systemctl restart vsftpd