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I'm trying to increase security for my cloud-based / multi-tenant environment. I'm considering having clients access an obscure URL such as GUID.myCloud.com. I will then respond to that guid-based request with customer-specific data.

  1. Considering that the certificate itself has a Subject name of *.myCloud.com, does that mean that the TLS protocol itself won't expose my private hostname?

  2. Is there any reason to believe that Subject Alternative Names would behave any differently?

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You'll still see server names in client hello SNI extensions.

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