Security

TLS Analyzer

Analyze the TLS configuration of any HTTPS server. Check protocol versions, cipher suites, and known vulnerabilities.

Domain or URL only — e.g. example.com or https://example.com/page → checks example.com

About this tool

What is TLS Analyzer?

Analyze the TLS configuration of any HTTPS server. Check supported protocol versions (TLS 1.2/1.3), cipher suites, and exposure to known TLS vulnerabilities.

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FAQ

Frequently asked questions

What TLS versions should I support?

TLS 1.2 and TLS 1.3. TLS 1.0 and 1.1 are deprecated and should be disabled. SSLv3 and earlier are critically vulnerable.

What is a cipher suite?

A cipher suite is a set of algorithms that define key exchange, authentication, bulk encryption, and message integrity for a TLS connection.

What is forward secrecy?

Forward secrecy (PFS) ensures that session keys are not compromised even if the server's long-term private key is later exposed. Use ECDHE or DHE key exchange for PFS.

What are common TLS vulnerabilities?

BEAST, POODLE, HEARTBLEED, and ROBOT attack various aspects of TLS. Most are mitigated by disabling old protocol versions and weak ciphers.

Related

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