Check port status ESXi Firewall

Hi im tryin to determine if  Cim Secure Server port are open. To test i use ssh and connects to one of my esxihosts.

From there i use command nc -z destination ip and port.  destination ip another ESX port for example.

Connection to xxx.xx.xxx.xx 902 port [tcp/authd] succeeded!

If i do the same but with port for Cim secure server 5889, i get nohting. Is it suppose to respond?. esxcli network fierwall ruleset list  lists CIMHttpsServer True, CIMHttpServer True. Vsphere client firewall propertis also shows incoming ports 5889 checked and running.

So is port open or not ?

/Christer