IPv6 SSL certificate for ports other than 80/443

Dear let's encrypt community,

I have a couple of IPv6 apache webservers running, where I got a let's encrypt ssl certificate via Certbot locally installed on the webservers. Now, this all works over port 80/443. Now, the question is how do I get an SSL certificate for a port other than 80/443 for IPv6 ? With IPv4 you can just use Nginx proxymanager for instance and then get a let's encrypt SSL for all your applications that run on any port. However, with IPv6 I do not seem to understand to get an SSl certificate for an application with the domain name https://[ipv6address]:8096 for instance. Hopefully, one of you guys can help me how SSL certificates work for non 80/443 ports.

Cheers,

Dennis

Thank you for your fast reply @rg305. Now, I just don't know how to get a certificate for applications that I run in docker e.g jellyfin runs on port 8096 for instance. If I go into my jellyfin virtual machine, install certbot I do the following:

sudo certbot certonly --standalone
Fill in domain name: ipv6address.com:8096

Then I get this error message: 'The server will not issue certificates for the identifier :: Error finalizing order ::'. So I figured that you cannot apply for a certificate with a port other than 80

Also, I know that my Jellyfin application is reacheable over IPv6. When I type http://[ipv6address]:8096 I got to my Jellyfin application perfectly, but insecurely without a certificate.

Thank you for your help already!!

certbot certificates
`sudo apachectl -t -D DUMP_VHOSTS

When I try this I only get certificates for ipv6 websites on port 80. I don't know how to get the nginx proxymanager let's encrypt IPv4 equivalent for IPv6 addresses. Because with IPv6 I don't even need a proxy, I can just call the application directly, and I can but only over an insecure connection.

I guess, the question would be, how do I get an SSL certificate for an IPv6 service that does not run on Apache.

thank you @rg305. I have never done this before, since I always used nginx proxymanager for IPv4. I will search on the internet on how to set something up like this.

yes, I just need to figure out how to place the certificate inside the docker file

yess that's a good idea! however I just don't know the exactly where I should mount it to inside the docker container. I did see videos online where they do it inside an NGINX container.