https://www.ssllabs.com/ssltest/index.html
This free online service performs a deep analysis of the configuration of any SSL web server on the public Internet.
推荐一个在线免费服务端SSL测试工具,可给HTTPS服务评级,并给出优化建议。
此外,还可用于客户端的SSL兼容性测试:
https://www.ssllabs.com/ssltest/viewMyClient.html