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Edge Security Acceleration:Origin certificates

Last Updated:Mar 11, 2025

Edge Security Acceleration (ESA) allows you to redirect requests to origin servers over HTTP, HTTPS, or the protocol used by the client.

How it works

Origin certificates ensure encrypted and secure data transfer between points of presence (POPs) and your origin server. An origin protocol is the protocol over which ESA POPs request resources from the origin server.

After you configure the origin protocol, ESA POPs fetch resources based on the specified protocol.

  • Origin Protocol

    • Match Client: Default. When a client sends an HTTP or HTTPS request, ESA redirects the request to the origin server over the protocol used by the client.

    • HTTP: ESA redirects requests to the origin server over HTTP.

    • HTTPS: ESA redirects requests to the origin server over HTTPS. Before you set Origin Protocol to HTTPS, make sure that you have enabled HTTPS and configured a valid certificate for the origin server.

  • HTTP Port

    • The origin port that ESA POPs access when employing the HTTP protocol. Valid value: 1 to 65535.

  • HTTPS Port

    • The origin port that ESA POPs access when employing the HTTPS protocol. Valid value: 1 to 65535.

    • Default: The protocol and port used by the client request.

Configure origin protocol and port

  1. In the ESA console, choose Websites and click the website name you want to manage.

  2. In the left-side navigation pane, choose SSL/TLS > Origin Certificates.
  3. In the Origin Protocol and Port section, click Configure.image

  4. Click OK.