Localhost connections to the PostgreSQL database do not use TLS. To enable TLS, you can generate your own self-signed certificate with OpenSSL or provide your own certificate.
Create Self-Signed Certificates Using OpenSSL on Windows 2019-03-05 by Johnny Graber One main source of problems working with encryption is the creation of your private key and your certificate.
Important: This example is intended to provide general guidance to IT professionals who are experienced with SSL requirements and configuration. The procedure described in this article is just one of many available methods you can use to generate the required files. The process described here should be treated as an example and not as a recommendation.
When you configure Tableau Server to use Secure Sockets Layer (SSL) encryption, this helps ensure that access to the server is secure and that data sent between Tableau Server and Tableau Desktop is protected.
Looking for Tableau Server on Linux? See Example: SSL Certificate - Generate a Key and CSR.
Openssl Generate Self Signed Certificate And Key Without Passphrase
Tableau Server uses Apache, which includes OpenSSL. You can use the OpenSSL toolkit to generate a key file and Certificate Signing Request (CSR) which can then be used to obtain a signed SSL certificate.
Steps to generate a key and CSR
To configure Tableau Server to use SSL, you must have an SSL certificate. To obtain the SSL certificate, complete the steps:
You can find additional information on the SSL FAQ page on the Apache Software Foundation website.
Configure a certificate for multiple domain names
Tableau Server allows SSL for multiple domains. To set up this environment, you need to modify the OpenSSL configuration file, openssl.conf, and configure a Subject Alternative Name (SAN) certificate on Tableau Server. See For SAN certificates: modify the OpenSSL configuration file below.
Set the OpenSSL configuration environment variable (optional)
To avoid using the
-config argument with every use of openssl.exe, you can use the OPENSSL_CONF environment variable to ensure that the correct configuration file is used and all configuration changes made in subsequent procedures in this article produce expected results (for example, you must set the environment variable to add a SAN to your certificate).
Open the Command Prompt as an administrator, and run the following command:
set OPENSSL_CONF=c:Program FilesTableauTableau Serverpackagesapache.<version_code>confopenssl.cnf
Notes:
Generate a key
Generate a key file that you will use to generate a certificate signing request.
Create a certificate signing request to send to a certificate authority
Use the key file you created in the procedure above to generate the certificate signing request (CSR). You send the CSR to a certificate authority (CA) to obtain a signed certificate.
Important: If you want to configure a SAN certificate to use SSL for multiple domains, first complete the steps in For SAN certificates: modify the OpenSSL configuration file below, and then return to here to generate a CSR.
Send the CSR to a certificate authority to obtain an SSL certificate
Send the CSR to a commercial certificate authority (CA) to request the digital certificate. For information, see the Wikipedia article Certificate authority and any related articles that help you decide which CA to use.
Use the key and certificate to configure Tableau Server
When you have both the key and the certificate from the CA, you can configure Tableau Server to use SSL. For the steps, see Configure External SSL.
For SAN certificates: modify the OpenSSL configuration file
In a standard installation of OpenSSL, some features are not enabled by default. To use SSL with multiple domain names, before you generate the CSR, complete these steps to modify the openssl.cnf file.
Additional information
If you prefer to use a different version of OpenSSL, you can download it from Open SSL for Windows.
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