Can someone please tell me the answer to this?

Scroll down to Configuration. Note the list of protocols supported and not supported. (If this site was to increase its security, which protocols should it no longer support?)

Here is the list of protocols that it brought up, how do I know which one should no longer be supported if the security increases??

Protocols TLS 1.3 TLS 1.2 TLS 1.1 TLS 1.0 SSL 3 SSL 2 For TLS 1.3 tests, we currently support draft version 18. No Yes Yes Nto Nto