Isilon Duo authentication on sudo su

Hi,

On Isilon 8.2.2 the SSH can use the Duo authentication.

So I disabled the root SSH and enabled the Duo authentication with autopush, it is working great.

But does 8.2.2 support sudo su with Duo authentication? I have configured the Duo authentication application for sudo su, but it doesn't work.

Is there any documents If Isilon 8.2.2 supports the sudo su Duo authentication? Or just modify the Duo setting at Isilon will do it?

I appreciate your help.

Thanks,

Cher