Check certificates: FTP StartTLS functionality
At present, it is not possible to monitor certificates of an FTP proxy whose connection is initialised using StartTLS FTP.
Although the certificate check offers the option to query several protocols via StartTLS, FTP is not included; see the attachment.
I have posted a forum entry on this subject; see https://forum.checkmk.com/t/starttls-ftp-proxy-certificate-monitoring/59760.
Please add “FTP StartTLS” to the list.