Como Desbloquear porta 80 e 443 que estão fechadas no NMAP

[Lilly]

Talvez dê uma olhada neste post aqui

Port 80/443 not accessible while installing Discourse

Sounds like you’re doing the right stuff. You’re sure that your DNS resolves to your server IP and only there? Oh. I can’t tell at quick glance whether discourse-setup look only at IPv4. You might try running ./discourse-setup --skip-connection-test to skip the test.