On 8/10/24 1:07 PM, Richard Shaw wrote:
> I'm attempting to run a service on port 443 but no matter what I do,
> nmap reports the port is closed. Both systems are Fedora 40.
>
> On the server:
> # firewall-cmd --add-service=https
> success
> # firewall-cmd --runtime-to-permanent
> success
> # firewall-cmd --reload
> success
> # firewall-cmd --list-services
> cockpit dhcpv6-client http https mqtt mqtt-tls postgresql ssh
>
> On my desktop:
> $ nmap -p 443 <IP address>
> Starting Nmap 7.95 ( https://nmap.org <https://nmap.org> ) at 2024-08-10
> 15:03 CDT
> Nmap scan report for r2d2.localdomain (<IP Address>)
> Host is up (0.00038s latency).
>
> PORT    STATE  SERVICE
> 443/tcp closed https

That means it's open from the firewall side, but nothing is listening on
the port.