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Enable Tech Support Mode Timeout

Tech Support Mode is a great feature of ESXi that lets admins and support personnel access the command directly on a ESXi hosts. This can be done via SSH or thru the host console. The security risk is that the console does not shut down automatically by default. There is a simple fix for this however, you can set the auto-timeout so that Tech Support Mode will shutdown automatically after a certain time has passed. You can find a great article on tech support mode here.

To enable the Tech Support Mode Timeout via the vSphere Client (from the KB Article):

  1. Select the host and click the Configuration tab.
  2. Click Software>Advanced Settings. ESXi 5.0: Change the UserVars.ESXiShellTimeOut field to the desired value. ESXi 4.1: Change the UserVars.TSMTimeOut field to the desired value.
  3. Click OK.
The time is set in seconds so make sure you have it turn off but also leave enough time to work.

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