Reciving an error and cannot figure out why

My domain is:

I ran this command:
sudo certbot certonly --apache
sudo certbot --apache
It produced this output:
Saving debug log to /var/log/letsencrypt/letsencrypt.log

Which names would you like to activate HTTPS for?
We recommend selecting either all domains, or all domains in a VirtualHost/server block.


Select the appropriate numbers separated by commas and/or spaces, or leave input
blank to select all options shown (Enter 'c' to cancel):
Requesting a certificate for

Certbot failed to authenticate some domains (authenticator: apache). 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 Apache configuration changes made by Certbot. Ensure that the listed domains point to this Apache server and that it is accessible from the internet.

Some challenges have failed.
Ask for help or search for solutions at See the logfile /var/log/letsencrypt/letsencrypt.log or re-run Certbot with -v for more details.
My web server is (include version):

The operating system my web server runs on is : raspberry pi os bookworm on a raspberry pi 3b+

I can login to a root shell on my machine (yes or no, or I don't know):yes

I'm using a control panel to manage my site (no, or provide the name and version of the control panel):no

The version of my client is (e.g. output of certbot --version or certbot-auto --version if you're using Certbot):certbot 2.1.0

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Hello @wirytiox, welcome to the Let's Encrypt community. :slightly_smiling_face:

Something is filtering Port 80 & 443 between the Public Internet and your server

$ nmap -Pn -p80,443
Starting Nmap 7.80 ( ) at 2024-03-10 01:44 UTC
Nmap scan report for (
Host is up.

80/tcp  filtered http
443/tcp filtered https

Nmap done: 1 IP address (1 host up) scanned in 3.79 seconds

ill call my isp on monday, i think those guys disabled my port fordwarding again when i upgraded to 300mbit

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@wirytiox here are some online tools to assist in checking


yeah, i have nmap, but my small brain forgot to use it, thank you, now i am pretty certain is my isp, it wouldn't be the first time...


wait, then why i can connect with ? that doesn't make much sense. i placed a temporary webpage to test the ssl and still, no luck, is must be something besides my isp(i have the correcto port fordwarding)

@wirytiox most likely you are connecting on the same local network as the server, not from the Public Internet. Try with your cellphone with Wi-Fi off so that you are using the carrier's network.


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