You can set up your environment to require smart card authentication when a user connects to a vCenter Server or associated Platform Services Controller from either the vSphere Client or the vSphere Web Client.
How you set up smart card authentication depends on the version of vSphere that you are using.
|6.0 Update 2
Later versions of vSphere 6.0
||vSphere 6.0 documentation center.|
|6.5 and later||
||Configure the Reverse Proxy to Request Client Certificates|