SSL Certificate Check
HTTPS Certificate Check Guide
✅ SSL Security Best Practices Checklist
Strict-Transport-Security header forces browsers to use HTTPS, preventing downgrade attacks. Recommended max-age of at least one year.
OCSP Stapling allows the server to cache certificate revocation status, reducing client validation latency and improving performance and privacy.
Certificates should be logged in CT logs, searchable via crt.sh. CT helps detect unauthorized certificate issuance.
Disable SSLv3, TLS 1.0, and TLS 1.1. Only allow TLS 1.2 and TLS 1.3.
Use AEAD cipher suites (AES-GCM, ChaCha20-Poly1305). Disable weak algorithms like RC4 and 3DES.
The server should return the full intermediate certificate chain so all clients can verify the chain of trust.
All HTTP requests should 301 redirect to HTTPS, ensuring full-site encryption.
Use at least 2048-bit RSA or 256-bit ECDSA keys. Consider using ECDSA for better performance.
🌐 Online SSL Check Tools
Use the following online tools for more detailed SSL certificate analysis:
SSL Certificate Check Tool Guide
Main Features
- Command Generation - One-click OpenSSL certificate check commands
- Comprehensive Checks - Covers certificate validity, SAN, protocol version, etc.
- Security Checklist - Interactive SSL best practices checklist
- External Tools - Curated list of major online SSL check platforms
Use Cases
- Website SSL certificate expiry checks
- HTTPS configuration security audit
- TLS protocol version verification
- Certificate chain integrity troubleshooting
- HSTS and other security header checks