Cloud Calculation - SSL Handshake Failed

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  • Frequently Asked Questions (FAQs)

New

11/01/2023

005421

Frank Faulstich

Calculation

RFEM 6

RSTAB 9

When trying to start a cloud calculation, I get the error message SSL handshake failed. What should I do?

Answer

If this error message appears, RFEM/RSTAB cannot connect to the server managing the cloud calculations.

Please ask your IT department to check the communication with our server. It is necessary to enable the following access in the firewall policies as well as in the network:

  • Server name: cloud.dlubal.com
  • Server IP: 89.187.130.211
  • Server Port: 443

If the connection still does not work after this procedure, your IT department needs to check whether the SSL certificate has been exchanged, based on your internal guidelines (for example, using a proxy). They should be able to check this with software (for example, OpenSSL) in the command line:

  • cd C:\Program Files\OpenSSL-Win64\bin
  • openssl.exe s_client -connect cloud.dlubal.com:443

Keywords

SSL Handshake Failed SSL Cloud Calculation

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