sslscan2

• https://github.com/rbsec/sslscan

brew install sslscan

sslscan --help

 sslscan 127.0.0.1
Version: 2.0.13-static
OpenSSL 1.1.1o  3 May 2022

ERROR: Could not open a connection to host 127.0.0.1 (127.0.0.1) on port 443 (connect: Connection refused).

See also

• SSL: OpenSSL, LibreSSL, wolfSSL, BoringSSL, SSL pinning, /etc/ssl/certs/, ca-certificates, /etc/ssl/, sslscan2