SSL: This server does not support Forward Secrecy with the reference browsers.

Help! (Home for newbies)
1

I used the standard LetsEncrypt Module in Virtualmin. I ran the SSL Labs checker and I got a B. Reason given is “This server does not support Forward Secrecy with the reference browsers. Grade capped at a B.”

I have used LetsEncrypt for Apache Webservers before, and I have never had this issue. Can somebody point me in the direction of how to enable this feature?

2

https://serverfault.com/questions/895204/forward-secrecy-support

https://www.digicert.com/ssl-support/ssl-enabling-perfect-forward-secrecy.htm