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- Select the ESXi host
- Select the Configuration tab
- Select Security Profile under Software
- Click Properties
- Select Remote Tech Support (SSH)
- Click Options
- Select Start automatically
- Click Start
- Click OK
In the case of ESX 4.1, SSH is enabled as the default. Using the vSphere Client, you can confirm it:
- Select the ESXi host
- Select the Configuration tab
- Select Security Profile under Software
- Click Properties
- Select SSH Server
- Click Options
- Confirm that Start automatically is selected
- Click OK
How to configure ESX/ESXi to use SSH identity key authentication:
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