Post-Installation Verification

After installation, thoroughly verify certificate functionality. Access your site via HTTPS and check for browser warnings or errors. Examine certificate details to confirm correct domain coverage and expiration dates. Use online tools like SSL Labs' SSL Test to identify configuration issues and receive security grades. These tools check certificate chains, protocol support, and cipher configurations.

Test across multiple browsers and devices to ensure broad compatibility. Mobile devices may have different certificate stores or validation requirements. Older browsers might not support modern protocols or cipher suites. API clients and other non-browser applications may have specific requirements. Document any compatibility limitations for support purposes.

Implement monitoring to ensure continued functionality. Certificate monitoring services alert before expiration. Availability monitoring detects certificate-related outages. Security scanning identifies new vulnerabilities in SSL/TLS implementations. Regular monitoring prevents surprise failures and maintains security posture over time.