letsencrypt - How do I get a Grade A SSL Certificate?

Thank you very much.

I use apache2 and used that to find this:
https://community.letsencrypt.org/t/howto-a-with-all-100-s-on-ssl-labs-test-using-apache2-4-read-warnings/2436

Hi There!

I located on the letsencrypt forums a page detailing how to get an A+ rating:

• HOWTO: A+ with all 100%’s on SSL Labs test using Nginx mainline & stable

It's pretty detailed, and it does speak specifically to nginx. The principles should remain the same to any web-server software. Primarily making sure that you are utilizing an up to date TLS version

Reading through the guide, it's also critical that you are using 4096-bit RSA, or secp256 when generating the key.

Depending on who is accessing your website, being grade A+ may also decrease accessibility. If you know that all clients will be up to date with their systems (or just prefer the security) - aim for that A+ for sure. Otherwise, just understand it could also come with issues for clients that are not on the current standards (TLS for example). Most modern browsers should be utilizing these newer standards by default, older non-supported browsers will likely not.

Letsencrypt Forums would also be a great location to ask for stack specific changes.

So what you're saying is that Grade A+ won't get me more people to my site - and that it has down sides. So if Grade B is ok, then I'll rather leave it at that. I know for a fact quite a lot of my users are using old technology.