SSL (Secure Sockets Layer) is a standard security technology that establishes an encrypted link between a web server and clients. To use SSL, you need to install an SSL certificate on Tableau Server.
You can configure Tableau Server to use SSL in the following ways:
Use SSL for external HTTP traffic.
Use mutual (two-way) SSL between clients (Tableau Desktop, web browsers, and tabcmd.exe) and Tableau Server.
Use SSL for all HTTP traffic between internal server components and the repository.
If you are using mutual SSL, each client also needs a certificate.
Note: Tableau Server uses SSL for user authentication. SSL is not used to handle permissions and authorisation to content (data sources and workbooks) hosted on Tableau Server.