Use the SSL option if you need a secure connection. The default is None, which corresponds to the Unvalidated (insecure) option. If you are making a connection to MongoDB Atlas, use the System CA/Atlas Deployment option. If you select Server Validation, you will see a browse button appear that lets you choose the certificate authority file for the server running the mongod instance.
If you choose Server and Client Validation, you are presented with a set of drop-down boxes that let you select the server's certificate authority file, the client certificate file, and the client's private key file. You must also enter the password. Here are the additional fields that appear when you choose Server and Client Validation:
In order to connect via an SSH tunnel, click SSH Tunnel and select either Use Password or Use Identity File. If you choose the former, you must enter the SSH server's hostname, tunnel port, username, and password. Here is what you...