Remember! That the ISRG Root X1 expires today, and it can break older devices:
You are a website or application own can mitigate this for now by getting a free certificate from BuyPass - they offer free certificate and are acme compatible. It works out of the box i pfsense and it is easy to get started.
A instance dedicated - but not limited - to people with an interest in the GNU+Linux ecosystem and/or general tech. Sysadmins to enthusiasts, creators to movielovers - Welcome!