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Barracuda Web Application Firewall

How do I troubleshoot errors received when loading an intermediary certificate on my Barracuda Web Application Firewall?

  • Type: Knowledgebase
  • Date changed: one year ago

Solution #00003934

Scope:
All Barracuda Web Application Firewalls, all firmware versions.

Answer:

Certificates are uploaded to the Barracuda Web Application Firewall from the BASIC > Certificates tab. After the certificate is uploaded, a confirmation message is provided to verify the certificate was loaded successfully. If you receive an error, Warning: Unable to verify the issuer of the certificate, the following steps can be used to troubleshoot the problem.

  1. From your server, locate and double click to open the .pfx or .pem (certificate) file.
    Certificates with .pfx extension are primarily used for Microsoft IIS Web Servers, while.pem extensions are used primarily for Apache.
  2. A wizard will launch. Click Next until you reach the screen showing the File to Import.
    Verify this is the file you selected, and then click Next.
  3. Where prompted, enter the password you used to protect your certificate when you created it on your server.
  4. Click the Mark this Key as Exportable box to allow a backup of your key at a later date.
  5. Click Next, and then click Finish to close the wizard.
  6. Open Internet Explorer and then select Tools > Internet Options.
  7. Go to the Content tab and click on the Certificates.
  8. From the Personal tab, select the imported certificate and then click View.
  9. Verify the value in the Issued By field (i.e. Equifax Secure Certificate Authority), and then click OK.
  10. Select the Trusted Root Certificate Authorities or Trusted Publishers to verify that the certificate is listed there. The certificate may be found in either tab.
    Note: If the Issued By authority is not listed in either tab stop here and contact support as the steps below will not work.
  11. Go back to the Personal tab, select the imported certificate and click Export.
  12. A wizard will launch. Check the box to Export the Private Key, and then click Next.
  13. Uncheck the box to Enable Strong Protection, and then click Next.
  14. If you are prompted (optional), check the box to Include all Certificates in the Certification Path, and then click Next.
  15. Enter a password to protect the private key. 
  16. Enter a name for the key, and then click Next and Finish to close the wizard.
  17. Locate the exported certificate and then test it on the Barracuda Web Application Firewall.

Link to This Page:

https://campus.barracuda.com/solution/50160000000HYrOAAW