OpenFire on port 9090 ; Management Interface

Hi there,

I'm still learning much about Fedora systems. However, I did a bit of research online and it looks like this might have something to do with Fedora running Cockpit via socket. As such the following seems to at least close my open 9090 port on a fresh Fedora 35 installation:

Before:

$ nmap -p 80,443,9090 173.255.219.95

Starting Nmap 7.40 ( https://nmap.org ) at 2022-04-11 15:13 EDT
Nmap scan report for 173-255-219-95.ip.linodeusercontent.com (173.255.219.95)
Host is up (0.069s latency).
PORT     STATE    SERVICE
80/tcp   filtered http
443/tcp  filtered https
9090/tcp open     zeus-admin

Nmap done: 1 IP address (1 host up) scanned in 0.59 seconds

Fix:

[root@localhost ~]# sudo systemctl stop cockpit.socket
[root@localhost ~]# sudo systemctl disable cockpit.socket
Removed /etc/systemd/system/sockets.target.wants/cockpit.socket.

After:

$ nmap -p 80,443,9090 173.255.219.95

Starting Nmap 7.40 ( https://nmap.org ) at 2022-04-11 15:23 EDT
Nmap scan report for 173-255-219-95.ip.linodeusercontent.com (173.255.219.95)
Host is up (0.069s latency).
PORT     STATE    SERVICE
80/tcp   filtered http
443/tcp  filtered https
9090/tcp closed   zeus-admin

Nmap done: 1 IP address (1 host up) scanned in 0.63 seconds

That seems to address the issue with the interface being exposed. I should point out that, I don’t know what the implications are yet of turning this off. It might be a good idea for you to review the official Fedora docs for more details:

• https://docs.fedoraproject.org/en-US/fedora/latest/

Cheers,
Arty