If you are using java client , generally to find what is the protocol and
cipher used , you can configure -Djavax.net.debug=ssl for the java program.
You can configure this property either at server /client and redirect the
output to some file.
You will see message in ssl negotiation something like

ClientHello, TLSv1.2



ServerHello, TLSv1.2


https://dzone.com/articles/how-analyze-java-ssl-errors

Hope this helps.

-Rajesh


On Thu, Apr 19, 2018 at 4:35 PM, Ashutosh Kumar <ashutosh....@gmail.com>
wrote:

> I have configured client_encryption_options in cassandra.yaml .
> How do I know which version of TLS is being used?
>
> Thanks
> Ashutosh
>

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