User can detect open ssh port or another open ports on server that services Cockpit last version. This is a vulnerability that allows an user send request to internal hosts for detecting open ports. So that firewall configuration can be bypassed or the server can be used like gateway by malicious user for scanning process. In addition, user induces the application to make an request back to the server that is hosting Cockpit. For example: if system admin creates iptables rule to drop all packets that come to 22 port or another port, user can detect whether port 22 is open or not.