I have kind of the same problem like described here: #54131
We have a server which is connected to the internet through our fritz.box but which does serve websites only internally.
We have Confluence, davical and a Scrum tool installed there. I’d like to encrypt the communication using TLS.
When I run
certbot --nginx I get an error:
We do not have an own DNS Server in opur company. We have a fix IP-address and I access the server via VPN
I am pretty new into how the internet works so there might be a basic problem understanding the problem but I suppose that there exists no DNS entry pointing to my machine. How can I fix this? Why do I need a DNS entry altough the machine is only accessed via VPN or LAN?
My setup: nginx 1.1.14, Ubuntu 18.04LTS, I have sudo rights.