With Mozilla Firefox

If your browser is Mozilla Firefox:

  1. Click Tools > Options > Advanced. Then, depending on your version, either scroll down and click Manage Certificates, or click the Security tab and then View Certificates.
  2. Click the Authorities tab. This lists the CAs known and trusted by your Web browser - that is, whose certificates have been installed in the SSL software in your Web browser. A default set of these, consisting of many of the world's best known ones, is installed when Firefox is installed.
  3. Double-click any one of the certificates shown. This displays the certificate on the screen. In many cases the "Issued To" and "Issued by" names are the same, indicating a self-signed certificate - one issued by a root CA to itself.
  4. Click the Certification Path tab. This lists the chain of CAs from the certificate back to the root CA. If this certificate is for a root CA, there is just one entry.
  5. Click OK to close the certificate.
  6. Look at some other certificates in the same way. You may find that all the certificates are for root CAs. If you find one for a subordinate CA, you can see the chain of CAs, from the subordinate CA that issued this certificate, back up through the hierarchy to the root CA.
  7. Close the dialog boxes.