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#tls

2 one-liners with this tag.

All one-liners tagged tls

Check whether a server supports TLS 1.3

$openssl s_client -connect example.com:443 -servername example.com -tls1_3 </dev/null 2>/dev/null | grep -E "^New,|Protocol *:"
harmlessSSL and certificates

Test an SMTP connection with STARTTLS and certificate

$openssl s_client -connect mail.example.com:587 -starttls smtp -servername mail.example.com
harmlessMail

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