How to activate SSH for ESX Server
SSH is blocked by default for the root user.
You’ll need to edit the file /etc/ssh/sshd_config.
You need to change the value PermitRootLogin to Yes
Then you’ll need to reboot your ESX Server
To open the Firewall Ports on your ESX Host:
To allow access to ESX Server for a service or management agent
1.) Log on to the VI Client and select the server from the inventory panel.
The hardware configuration page for this server appears.
2.) Click the Configuration tab and click Security Profile.
Select the SSH Client and SSH Server checkbox and click OK.