TLS Version Checker

Check supported TLS protocol versions

About TLS Version Checker

Our TLS Version Checker scans a server to determine which TLS protocol versions are supported. It tests TLS 1.0, 1.1, 1.2, and 1.3 and reports which are enabled. This is critical for security audits — legacy versions (TLS 1.0 and 1.1) are deprecated due to known vulnerabilities, while TLS 1.2 and 1.3 provide modern, secure encryption.

How to Use

1Enter the server domain or hostname to test.
2Click "Check" to scan supported TLS versions.
3Review which TLS versions are enabled.
4Disable legacy versions and ensure TLS 1.2/1.3 are active.

Use Cases

•Audit TLS version support for security compliance
•Detect deprecated TLS 1.0 and 1.1 on servers
•Verify TLS 1.3 is properly enabled
•Prepare for PCI DSS and industry compliance audits

Frequently Asked Questions

TLS 1.0 and 1.1 are deprecated and should be disabled. TLS 1.2 and 1.3 are considered secure.

TLS 1.3 removes insecure features, reduces handshake latency, and provides forward secrecy by default.

The scan typically completes in 5-10 seconds as it tests each version independently.

Very few modern clients use TLS 1.0 or 1.1. Disabling them affects less than 1% of users and significantly improves security.

Tips & Best Practices

•Support only TLS 1.2 and TLS 1.3 for optimal security
•Disable SSL 3.0, TLS 1.0, and TLS 1.1 unless specifically required
•Test from multiple clients to catch configuration inconsistencies
•Document any legacy protocol support with business justification

Technical Details

Protocols: SSL 2.0, SSL 3.0, TLS 1.0, TLS 1.1, TLS 1.2, TLS 1.3
Methods: Direct connection testing with protocol-specific handshakes
Compliance: NIST, PCI DSS, and Mozilla guidelines
Output: Version matrix with security ratings and recommendations