I support a .NET site which (amongst many, MANY, other things) talks to remote APIs from supplier systems.
We want to upgrade to support TLS 1.2
We're hoping to do so as per this question: Are there .NET implementation of TLS 1.2?
But how do I check that this is actually working once I've made the change.
Ideally one of my supplier sites would start using TLS 1.2 ONLY and then my test could just be "can we talk to that supplier now?" But we don't have that.
I'm guessing I can do something with a packet sniffer of some sort, but I wouldn't know what I was looking for exactly, nor how to set up the sniffer to be collecting the neccessary data in a readable manner.
Either:
- Can someone point me in the direction of a comprehensive guide to how to collect that data in Fiddler/WireShark
Or
- Can someone advise an alternative way to test that the change has worked.
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