New Certificate for subdomain on different host

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I am attempting to create a new certificate for a new subdomain ( I currently have certificates (created by certbot) for the domain ( on a different host. Any help would be greatly appreciated.

My domain is:

I ran this command:
sudo certbot --nginx

It produced this output:
Requesting a certificate for

Certbot failed to authenticate some domains (authenticator: nginx). The Certificate Authority reported these problems:
Type: connection
Detail: Fetching Timeout during connect (likely firewall problem)

Hint: The Certificate Authority failed to verify the temporary nginx configuration changes made by Certbot. Ensure the listed domains point to this nginx server and that it is accessible from the internet.

My web server is (include version):

The operating system my web server runs on is (include version):

My hosting provider, if applicable, is:
I can login to a root shell on my machine (yes or no, or I don't know):
I'm using a control panel to manage my site (no, or provide the name and version of the control panel):
The version of my client is (e.g. output of certbot --version or certbot-auto --version if you're using Certbot):
certbot 1.26.0

1 Like

Your firewall is blocking absolutely everything:

% nmap -A -Pn
Starting Nmap 7.92 ( ) at 2022-04-13 20:46 CEST
Nmap scan report for (
Host is up.
rDNS record for
All 1000 scanned ports on ( are in ignored states.
Not shown: 1000 filtered tcp ports (no-response)

Service detection performed. Please report any incorrect results at .
Nmap done: 1 IP address (1 host up) scanned in 202.40 seconds

Set up your firewalls :wink:

(OS, and AWS)


Sorry, that was a noob mistake. Nonetheless, appreciate the fast response.


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