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URL Whitelisting within a Proxy for tableau-server on Linux(RHEL)

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My company is trying to setup a tableau-server on a linux virtual machine (RHEL).

Now, the VMs we use, cannot access the internet, so, we have to specifically mention the endpoints to be whitelisted in a proxy which the VM will try to hit for this licensing/activation purposes.

So, we went through this official documentation:

https://help.tableau.com/current/server-linux/en-us/plan_network.htm

We found the following endpoints for the activation/licensing service: Tableau Server needs to connect to the following internet locations for licensing purposes:

  • atr.licensing.tableau.com:443
  • licensing.tableau.com:443
  • licensing.tableausoftware.com:443
  • s.ss2.us
  • ocsp.rootg2.amazontrust.com
  • ocsp.rootca1.amazontrust.com
  • ocsp.sca1b.amazontrust.com
  • crt.sca1b.amazontrust.com
  • crt.rootca1.amazontrust.com
  • ocsp.sca0a.amazontrust.com
  • crt.sca0a.amazontrust.com
  • ocsp.sca1a.amazontrust.com
  • crt.sca1a.amazontrust.com
  • ocsp.sca2a.amazontrust.com
  • crt.sca2a.amazontrust.com
  • ocsp.sca3a.amazontrust.com
  • crt.sca3a.amazontrust.com
  • ocsp.sca4a.amazontrust.com
  • crt.sca4a.amazontrust.com
  • crl.rootca1.amazontrust.com
  • crl.rootg2.amazontrust.com
  • crl.sca1b.amazontrust.com

We whitelisted the endpoints above, and still we are getting the following error: enter image description here

So, to debug this, we started hitting the URLs mentioned above using cURL, for example, when we execute the following:

curl -Is s.ss2.us | head -n 1

We get:

302 Moved Temporarily

Which could mean, it is trying to redirect. How to handle such scenarios ? Can anyone help ? Thanks in advance.

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