ESXi firewall
esxcli network firewall ruleset allowedip list
esxcli network firewall ruleset allowedip list
Bunch of random command lines used in the past
How to use SSH public / private keys to connect over SSH on ESXi host?
To have a valid SSL certificate on ESXi webUI (not VCSA) you need to replace rui files in /etc/vmware/ssl/.
From a Linux box