How to reject non-encrypted connections when I use the TLS function?

[Adwa0428]

Hi,
I set the FTPS server as the example:

var cert = new X509Certificate2("my.pfx", "my-super-strong-password-that-nobody-knows");
services.Configure(cfg => cfg.ServerCertificate = cert);

The FTP server allows to create TLS connections via FTP clients. But it still allows to create non-encrupted connections.
How could I set to reject non-encrypted connections, and only allow TLS connections?
Thanks.

[fubar-coder]

You can try to use implicit TLS, which means that every connection must be encrypted from the start.

[Adwa0428]

I tried to use implicit TLS and it works fine. Thanks for you great help!