Hello, I’m trying to solve the issue with standalone being discontinued also.
I have a Ubuntu Nginx load balancer that was using tls-sni-01 via standalone.
No ports are open since it’s just a load balancer. Webroot isn’t working without any ports.
I’ve read up on DNS and it seems more complicated. Not sure if the Nginx authenticator would work without an open port. Would it?
What is my best replacement option?