I am currently testing my nginx server, and optimizing the security where possible.
One thing I was wondering about, is why my web server gets a 80% rating on Key Exchange, while many other servers get 90% on this part.
When I compare my results with other servers that have 90%, I can't seem to find any differences. What causes the 80% rating on my server?
These are the results: https://www.ssllabs.com/ssltest/analyze.html?d=webmail.zone403.nl
I hope someone can answer my question.