SSL and request security?

Question

Information Security

I have a domain A with an SSL certificate.
And there is domain B with a completely different SSL certificate.
Will requests be secure from domain A to domain B?

Answer 1

You need to configure in SSL: a mandatory requirement for forward secrecy when connecting to your server.
Then the public key cannot be obtained when moving from one domain to another domain.
And all traffic exchange will go within a SINGLE SSL session.

Answer 2

What do you mean by security?
If you are talking about the transport layer, then yes, the stream will be encrypted with a public key.
If about a request from js, then CORS will not allow until you set it up.
EVIL
-------------------- | _____________________________ |
Site A Request -> Transport SSL -> Site B
--------------------|__________________________|