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Solution ID : SO16518

Last Modified : 05/31/2019

Managed PKI for SSL - Installation Instructions for F5 BIG IP v. 9.x and 10.x


To install the SSL certificate for Big-IP F5 Version 9.x and 10x , please follow the steps below. If you are unable to use these instructions for your server, DigiCert recommends that you contact either the vendor of your software or an organization that supports F5 BIG-IP server.
Step 1: Download and Install the Intermediate CA Certificate
All SSL certificates require the installation of an Intermediate CA certificate.
  1. Download the Intermediate CA certificate from this link.
  2. Click on the Managed PKI for SSL tab.
  3. Select the appropriate Intermediate CA certificate for your SSL Certificate type.
    NOTE: Click here to check which SSL product you have purchased.
  4. Make sure there are 5 dashes to either side of the BEGIN CERTIFICATE and END CERTIFICATE and that no white spaces, extra line breaks or additional characters have been inadvertently added.
  5. Save the file as intermediate-ca.crt
    NOTE: Do not use Microsoft Word or other word processing programs that may add characters. Do not include any leading or trailing whitespace before the beginning and ending hyphens.
  6. Save the file to the following location: /config/bigconfig/ssl.crt/intermediate-ca.crt 
    NOTE: In a redundant system, the keys and certificates must be in place on both controllers before you configure the SSL Accelerator. You must do this manually as the configuration synchronization utilities do not perform this function.
  7. Log in to the Configuration utility.
  8. Click Local Traffic.
  9. Click SSL Certificates.
  10. Click Import.
  11. Click Certificate from the Import Type menu.
  12. Click the Create New option.
  13. Type a unique name for the Certificate Name.
  14. Click Browse and navigate to the file you saved as intermediate-ca.crt.
  15. Click Open.
  16. Click Import.

Step 2: Obtain the SSL Certificate

  1. Once your Managed PKI for SSL administrator has approved your Certificate request, you will receive an email with the Certificate. The certificate is available as a download link, an attachment (Cert.cer), and pasted at the bottom of the email body.
  2. If copying the certificate imbedded in the body of the email, paste it into a text file using Vi or Notepad.
    NOTE: Do not use Microsoft Word or other word processing programs that may add characters. Confirm that there are no extra lines or spaces in the file.

    The text file should look like:
              [encoded data]
    -----END CERTIFICATE-----

    NOTE: Click here to download the certificate from your Managed PKI for SSL subscriber services page.
    Please select X.509 as a certificate format and copy only the End Entity Certificate.
  3. Save the certificate as SSLcert.crt

Step 3: Install the SSL Certificate 

  1. In the navigation pane, click Proxies.
  2. On Proxies screen, click the Install SSL Certificate Request tab. The Install SSL Certificate screen opens.
  3. In the Certfile Name box, enter the fully qualified domain name of the server with the file extension .crt. If you generated a temporary certificate when you submitted a request to Symantec, you can select the name of the certificate from the drop down list. This allows you to overwrite the temporary certificate with the certificate from Symantec.
  4. Paste the text of the certificate into the Install SSL Certificate window.
  5. Click Write Certificate File to install the certificate. After the certificate is installed, you can continue with the next step in creating an SSL gateway for the server.

Step 4: Establish the trust chain
         NOTE: The proper Intermediate CA certificate must be set to ensure a complete chain of trust.
  1. Log in to the Configuration utility.
  2. Click Local Traffic.
  3. Click Profiles.
  4. Click Server from the SSL menu.
  5. Click the Server SSL profile to configure.
  6. Click Advanced from the Configuration menu.
  7. Click the appropriate chain certificate from the Chain dropdown box.
  8. Click Update.
    NOTE: Please refer to the screenshot of the F5 Big-IP interface.

  9. Verify your installation with the Digicert SSL Certificate Checker

F5 Support

          For additional information, please refer to F5 Support.