There are several options to test your site for TLS 1.2 Protocols.

Option 1: Use SSL Labs for external testing

To quickly test external facing servers, it’s possible to use the free online service from Qualys SSL Labs. This free online service performs a deep analysis of the configuration of any SSL web server on the public Internet.  https://www.ssllabs.com/ssltest/index.html

Option 2: Use SSLyze for internal testing

SSLyze is a Python library and a CLI tool that can analyze the SSL configuration of a server by connecting to it. It is designed to be fast and comprehensive and should help organizations and testers identify mis-configurations affecting their SSL/TLS servers.

1. Visit: https://github.com/nabla-c0d3/sslyze

2. Download the appropriate files

3. Windows compatible exe can be found on this page: https://github.com/nabla-c0d3/sslyze/releases

4. Open an administrative command prompt and navigate to the location of SSLyze

5. Run the following command: exe –regular 10.0.70.35:443 –  (Change IP above to server IP or host name)

Results should indicate that the server rejected all cypher suites for every protocol except for TLS 1.2