How to fix SSL with Sucuri Firewall SSL certificate

If you have Sucuri’s Firewall enabled, they have SSL. I had trouble getting my site to be secure, as the https:// would cause a redirection error. Turns out I needed 2 simple things:

• Really Simple SSL plugin, just install, activate, and one-click to make all pages go from http:// to https://
• Change your Siteurl and Home to https://

After that, the site came up instead of showing a full screen error.

Of course, there were mixed content errors, so I fixed them.

Note: See also Tips for Moving a Site.