How to connect tableau with salesforce?

Tableau can be connected to Salesforce in the same way you connect it to any other server. Make sure you have an account on the Salesforce with valid authorization.

Once done, go the data pane and follow to a server → More-->Salesforce

This will open a pop-up for you. Here enter the details and connect.

Now you will be able to access all the data available on Salesforce and on which you have access.