ESXI-06-000005 - The system must enforce the limit of three consecutive invalid logon attempts by a user.

Information

By limiting the number of failed login attempts, the risk of unauthorized access via user password guessing, otherwise known as brute-forcing, is reduced. Limits are imposed by locking the account.

Solution

From the vSphere Client select the ESXi Host and go to Configuration >> Advanced Settings. Select the Security.AccountLockFailures value and configure it to 3.

or

From a PowerCLI command prompt while connected to the ESXi host run the following command:

Get-VMHost | Get-AdvancedSetting -Name Security.AccountLockFailures | Set-AdvancedSetting -Value 3

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_VMware_vSphere_6-0_ESXi_V1R5_STIG.zip