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SSL Checker

Read a domain's TLS certificate -- who issued it, what it covers and when it expires

The certificate is read from port 443, the port HTTPS uses.

What is an SSL certificate?

An SSL (Secure Sockets Layer) certificate is a digital certificate that authenticates the identity of a website and enables an encrypted connection. Here are some key points about SSL certificates:

Purpose

  • Encryption: SSL certificates encrypt data transmitted between the user’s browser and the web server, ensuring confidentiality and tools integrity.
  • Authentication: They verify the identity of the website, helping to prevent attacks like phishing.

    Types of SSL Certificates

  1. Domain Validated (DV): Basic validation, confirming ownership of the domain.
  2. Organization Validated (OV): Includes verification of the organization, providing more trust.
  3. Extended Validation (EV): Offers the highest level of validation, displaying the organization’s name in the browser's address bar.

    How to Obtain an SSL Certificate

  4. Choose a Certificate Authority (CA): Select a trusted CA to purchase your SSL certificate.
  5. Generate a CSR: Create a Certificate Signing Request (CSR) on your server.
  6. Submit the CSR: Send it to your chosen CA along with the necessary documentation for validation.
  7. Install the Certificate: Once issued, install the SSL certificate on your web server.

    Benefits

  • Enhanced Security: Protects sensitive information such as login credentials and payment details.
  • SEO Advantage: Search engines may rank secure sites higher.
  • User Trust: Users are more likely to trust websites with SSL certificates, indicated by a padlock icon in the browser.

    Conclusion

    Implementing an SSL certificate is essential for maintaining security and trust for any website, especially those handling sensitive information.