I have a VM (hosted in Azure) cluster (one of many identical machines) that I'm using for running my application. I have noticed that some webpages are cannot be loaded in those machines. Why? SSL\TLS issues.
Problematic page example: here.
When I'm entered this URL with IE11 in my VM- I'm getting back "This page cannot be displayed" message.
When I'm entered this URL with FireFox in same machine - it's working smoothly! (so it's not a network problem).
I discovered that the problem is Elliptic Curve keys, which IE11 not supporting. How I'm discovered this? By entering this site I'm found that ECDHE-ECDSA-AES128-GCM-SHA256 is MISSING.
So, If I'll be able to add support on this (ECDHE-ECDSA-AES128-GCM-SHA256) cipher, this website will be running good.
- How to add support on this cipher? Tried to run Windows updates without success.
- No meter which machine I'll fix, this machine is only one of many VM in the cluster. How I can fix this in the whole cluster?
- Because my server encounter every day new URLs (with potential new ciphers). How I'm can support every possible cipher?