~ path tools

SSL / TLS Certificate Checker

The SSL / TLS Certificate Checker inspects the certificate presented by a host. It is built for quick expiry, name match, and issuer checks.

What It Reviews

• Certificate subject and issuer.
• Expiration date and days remaining.
• Subject alternative names.
• Hostname match status.
• Port-specific TLS checks.

When To Use It

Use it when browsers warn about certificates, HTTPS suddenly fails, mail TLS is questioned, or a migration may be presenting the wrong certificate.

Common Findings

• Expired or nearly expired certificates.
• Missing SAN entries for the hostname.
• A load balancer or proxy serving a default certificate.
• Wrong port or service target.