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[Paqui Esther <paqui.esther AT mfo.ac.uk>]

Hello,

I am writing to report an issue when trying to access the following website while connected to the Eduroam network:

https://www.fondation-mfo.org 

When using Eduroam, the browser displays the following SSL error:

“This server could not prove that it is www.fondation-mfo.org; its security certificate is not trusted by your computer’s operating system.”

After several checks:

• The SSL certificate (Let’s Encrypt) is correctly installed and fully valid when tested on other networks (mobile data, etc.).
• The site passes all tests on SSL Labs
• The error disappears when not connected to Eduroam.
  
  

It therefore seems that the issue may be related to SSL inspection or filtering on the Eduroam network, which prevents the certificate from being recognized correctly.

Would it be possible to check whether this domain is being blocked or misinterpreted in your Eduroam configuration, and if so, to whitelist it?

Please let me know if you need any further information.

Thank you very much in advance for your help.

Best regards,

Paqui

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Paqui ESTHER

Computer Science student in Internship in Oxford

paqui.esther AT mfo.ac.uk