OpenSSL / curl 檢查網站伺服器加密模式

openssl s_client -connect www.google.com:443
openssl s_client -connect www.google.com:443 -tls1_1
openssl s_client -connect www.google.com:443 -tls1_2
openssl s_client -connect www.google.com:443 -tls1_3

curl -s -S -v -o /dev/null --no-progress-meter https://www.google.com
curl -s -S -v -o /dev/null --no-progress-meter https://www.google.com --tls-max 1.1
curl -s -S -v -o /dev/null --no-progress-meter https://www.google.com --tls-max 1.2
curl -s -S -v -o /dev/null --no-progress-meter https://www.google.com --tls-max 1.3