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Opportunistic Encryption

Opportunistic Encryption allows browsers to access HTTP URIs over an encrypted TLS channel. It's not a substitute for HTTPS, but provides additional security for otherwise vulnerable requests.

Use HTTPS when both strong encryption and authentication are required. HTTP Opportunistic Encryption provides a means of enabling TLS when needed for other protocols such as HTTP/2. It does not provide the same indications of security as HTTPS (the green lock icon in most browser address bars).

Enable Opportunistic Encryption

To set up Opportunistic Encryption:

  1. Log into your Cloudflare account and go to a specific domain.
  2. Navigate to SSL/TLS > Edge Certificates.
  3. For Opportunistic Encryption, switch the toggle to On.