TLS cipher suite checking via openssl

# TLS cipher suite checking via openssl / nmap ###### tags: `TLS` `HTTPS` `OpenSSL` `nmap` Refer to: [Transport Layer Security (TLS) Parameters](https://www.iana.org/assignments/tls-parameters/tls-parameters.xhtml#tls-parameters-4) ``` 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 ``` --- ### Install nmap ``` apt-get install nmap ``` ``` nmap --script ssl-enum-ciphers -p 443 example.com ```