Tableau Server Unable to Start due to Blocked Ports

Problem:
Sometimes you might need to use different (from the default port) port on Tableau. By default, SSL is using port 443. For my case, I use SSL and port 8443 for Tableau Server. After you changed the port, and tried to start Tableau service, you get this error:
*** Tableau Server Gateway requires port 443,
***    in use by process 4.
*** Tableau Server unable to start due to blocked ports.

Solution:
There are 2 files you need to change:
1. C:\Tableau\Tableau Server\data\tabsvc\config\httpd.conf
2. C:\Program Files\Tableau\Tableau Server\10.3\apache\conf\original\extra\httpd-ssl.conf

Change the port to listen to 8443 (replace 443 to 8443) on these 2 files.

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Frame cannot Load - Content Security Policy Issue

Problem:
You are using iframe to load a site from within a website, and the frame does not load.
In my case, I am using https for both the website and the iframe.

Error:
If you press F12 on the browser, you will see error similar to:

Refused to frame 'https://iframe_site' because it violates the following Content Security Policy directive: default-src 'self' 'unsafe-inline' 'unsafe-eval'...... (this can be found in web.config). Note that 'script-src' was not explicitly set, so 'default-src' is used as a fallback.

Solution:
Add the iframe_site to content-security-policy on the web.config.

<httpProtocol>
 <customHeaders>
  <add name="Content-Security-Policy" value="default-src 'self' 'unsafe-inline' 'unsafe-eval' iframe_site;" />
 </customHeaders>
</httpProtocol>

PS: If you are using port for the iframe site, you would need to include the port when adding into web.config.

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