I have NGINX configured to only support TLS version 1.3
However when I go to https://check-your-website.server-daten.de/
It shows the error
Error creating a TLS-Connection: TLSv1.3 found, but no connection via TLSv1.2 possible. Please activate TLSv1.2
Isn't enabling only TLSv1.3 much safer? Why do we still need to enable TLSv1.2?
Best Answer
TLS 1.3 only, is possible with modern clients. Test with the oldest client version you will support for your users.
Mozilla's server TLS profiles and configuration generator remains a good resource.