TLS Version Checker
Test and verify supported Transport Layer Security (TLS) protocol versions, cipher suite configurations, and handshake security posture.
Ready to check TLS configuration...
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TLS Protocol Reference
1. TLS 1.3 Compliance
TLS 1.3 minimizes handshake latency and removes vulnerable legacy cryptographic primitives, offering robust modern security.
2. Deprecated Protocols
SSLv3, TLS 1.0, and TLS 1.1 have been officially deprecated across modern browsers and regulatory compliance frameworks.
What is TLS Version Checker?
Test and verify supported Transport Layer Security (TLS) protocol versions, cipher suite configurations, and handshake security posture.
How to use TLS Version Checker
- Enter or paste the values requested in the input fields.
- Choose any options provided, then run an action button if the tool requires one.
- Review the result and copy or adjust it as needed.
TLS Version Checker features
- Available tool controls: Check TLS Support.
- Input and option fields: Target Domain or Hostname:, Protocol Support Summary:, Cipher Suites & Handshake Details:.
Frequently Asked Questions (FAQ)
Older protocols like TLS 1.0 and 1.1 contain known cryptographic vulnerabilities susceptible to downgrade attacks and traffic decryption.
Yes. This diagnostic simulator runs locally to verify endpoint configuration criteria and best practice parameters.
AEAD cipher suites such as AES-GCM and ChaCha20-Poly1305 paired with forward secrecy (ECDHE) are recommended for maximum protection.