Hello,
Is it possible to get the certificate for a server, which is located in a Backend without HTTP access from the Internet?
If so, how to do that or where to read about?
Many thanks in advance.
Regards,
Leo
Hi @Teamplay
if you know the basics
then read something about the dns challenge type:
But your client machine must be able to connect Letsencrypt.
So you can create a certificate using certonly + dns challenge on your webserver, then copy the required files to your backend server. If your backend server can talk with Letsencrypt (outgoing connections), then you can run the client on your backend server.
Hello JĂĽrgen,
Thanks a lot for your quick and friendly reply.
Which “language” should the backend server talk? 
HTTP ?
Regards
Leo
HTTPS.