Answer these questions to help the Community help you with Security questions.
Have you searched for an answer? YES
Please share your search results url: Sub Domain and SSL Problems
*Describe the issue you are having: I have a domain “mydomain.com” proxied with cloudflare and several sub-domains to access other machines such as nas.mydomain.com, webmail.mydomain.com, etc. the mydomain.com works fine and covered with CF certificate.
I have a dedicated server on which everything is hosted and I access it with https://serveur100.mydomain.com. nas and serveur100 are not proxied because if I proxy them, they will be under the ssl certificate provided by cloudflare but it will be impossible to login the servers. After login, both servers will go back to login page.
For info :
“A” record points to dedicated IP address of server
Universal edge certificate in CF is activated for *.mydomain.com
serveur100.mydomain.com is not proxied
nslookup serveur100.mydomain.com 1.1.1.1 show dedicated IP of the server
nslookup mydomain.com 1.1.1.1 shows cloudflare IPs
I installed a let’s encrypt certificate on the Synology nas server and somehow it works but not on the serveur100. Plesk tells me that domain cannot be resolved as it is pointing to another IP address (IP of the server unproxied). In cloudflare there is a A record that point to the dedicated public IP address of the server? I am also using cloudflare nameservers declared in plesk.
How can I have this sub domain covered under cloudflare universal edge certificate or unproxy this sub domain and have its own certificate such as let’s encrypt installed on server?
Thank you for your help.*
What error message or number are you receiving?
What steps have you taken to resolve the issue?
Was the site working with SSL prior to adding it to Cloudflare? YES
What are the steps to reproduce the error:
Have you tried from another browser and/or incognito mode? YES
Please attach a screenshot of the error: