- Login with root from the console
- Change directory with “cd /etc/ssh”
- Open sshd_config with “vi sshd_config”
- Locate Authentication section and change “PermitRootLogin no” to “PermitRootLogin yes”; for going into edit mode type i; press ESC to exit
- Type “:wq!” to save and exit the file
- Restart the SSH deamon with “service sshd restart”
- Start putty.exe or any of you favorite SSH remote management tools to connect to your ESX 3.5 server.
This procedure also applies to version 3.x. With this procedure I achieved to manage my ESX server remotely so I don’t need to use my remote management access card. SSH daemon also support secure file copy protocol which can be used to connect with WinSCP and download or upload any file/virtual machine to your VMFS file system.

Bharath
I need to restart service agent of ESX 3i server remotely.
By default SSH port is not enabled.
In this case how to connect to ESx 3i box remotely.
Regards,
Bharath