Command to know TLS Version:
openssl ciphers -v | awk '{print $2}' | sort | uniqFor TLS 1.3:
openssl s_client -connect www.google.com:443 -tls1_3For TLS 1.2:
openssl s_client -connect www.google.com:443 -tls1_2For TLS 1.1:
openssl s_client -connect www.google.com:443 -tls1_1For TLS 1:
openssl s_client -connect www.google.com:443 -tls1If you get the certificate chain and the handshake then the TLS version is supported. If you don’t see the certificate chain, and something similar to “handshake error” then its not.
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