In my zone there are no wired connections with good speed and I am therefore forced to use LTE connections, without Static IP.
For this reason I have registered a DuckDNS account which I have activated in pfSense.
Then, with BIND, I registered the various subdomains with cname associated with my DuckDNS account.
crm.mydomain.tld IN CNAME MY-ALIAS.duckdns.org.
erp.mydomain.tld IN CNAME MY-ALIAS.duckdns.org.
util.mydomain.tld IN CNAME MY-ALIAS.duckdns.org.
These subdomains are registered on my Debian 10 server in Apache (2.4.38)
This way I can access them via http.
I now want to create SSL certificates with Let's Encrypt and would like to understand:
- If I can do it with DuckDNS or do I need to use another DDNS
- How to configure the domain.
- How to configure the server
I log into my server and name server via SSH or with Webmin.
Thanks in advance.