I have my firewall set to block everything except ports:
- 20000 (destination)
- 10000 (destination)
- 443 (destination)
- 80 (destination)
- 53 (destination & source)
- 22 (destination)
However when the firewall is active requesting a Lets Encrypt certificate fails with a time-out downloading the certificate.
If I disable the firewall, it works.
What have I got configured wrong?