TLS Version & Cipher Scan
Shows which TLS versions a host supports, the negotiated cipher, and flags insecure versions.
Frequently Asked Questions
What is TLS and how does it differ from SSL?
TLS is the modern, more secure successor to SSL and encrypts the connection between browser and server. "SSL certificate" usually refers to TLS today.
Why should TLS 1.0 and 1.1 be disabled?
These versions have known weaknesses and standards such as PCI DSS have deprecated them; only TLS 1.2 and 1.3 are recommended.
What does the "negotiated cipher" mean?
It is the set of algorithms the browser and server agree on to encrypt the connection. Stronger ciphers provide better security.