The foundation of a SSL certificate is having a third party positively verify the cert or having the user authorize the cert independently of external sources.
If the certificate authority reports a problem with the cert, the cert is invalid or the user can not independently verify the cert then we can not trust it.
If the user has authorized a self signed certificate as "good" then a pass value will also be awarded.
If there is a problem with the certificate or it can not be verified then the entire SSL connection is suspect.
The score gives a more detailed idea of how securely Firefox connected to this site.
This describes the response from the certificate authority server.
There you will see the "Calomel SSL Validation" button in gray. We like the placement to the left of the URL bar, but the position is completely up to you.
You may need to refresh the page for the icon to turn the correct color after the install.
Access to a detailed summery of the SSL negotiation is supplied by a toolbar button.We also have Nginx tutorials including to help site owner setup a secure server.For this example we are going take a look at the details in the current toolbar button drop down box for this site with the "all ciphers allowed" security group chosen.Push the "green " URL button of our add on to see the drop down panel.If you do not currently see the toolbar button right click on the top tool bar, go to "customize" and scroll down to the bottom of the icon list.