Sage X3

We are trying to import some certifcates for https access without success sin V12. When we try to import we getting the message below. Any ideas on how we can resolve.

Exposing Syracuse to the Internet is a requirement of many customers, but it means we should account for brute-force password attacks. Has anyone ever tried inserting a captcha on the login page to stop bots and let through humans?

Is there any documentation available on enabling SSL for X3 Version 7? I found a document called Syracuse_HTTPS.pdf, but it is not very detailed.