SSL/TLS & Transport
critical Severity
Free Check

Modern TLS Version (TLS 1.2+ / TLS 1.3)

Ensures support for TLS 1.2 and modern TLS 1.3 protocols while disabling insecure legacy standards (TLS 1.0, 1.1, SSLv3).

Test Your Website for Modern TLS Version (TLS 1.2+ / TLS 1.3)

Run this check along with 90+ automated tests across your domain.

Why It Matters

Legacy SSL/TLS protocols have known cryptographic vulnerabilities (BEAST, POODLE) and fail PCI DSS compliance.

How We Check This

We negotiate TLS handshakes and verify support for TLS 1.2 and 1.3 while confirming older protocols are rejected.

How to Fix & Implement

Copy-paste configuration blocks tailored for your web server or edge proxy.

nginx snippet
ssl_protocols TLSv1.2 TLSv1.3;
ssl_prefer_server_ciphers off;

Frequently Asked Questions

Why is TLS 1.3 superior?

TLS 1.3 reduces handshake latency to 1 RTT (or 0 RTT) and removes obsolete cryptographic ciphers.