You can export a CA certificate to your local computer. The certificate is saved in PKCS #12 format.
To export a CA certificate
In the AMC, navigate to System Configuration > SSL Settings.
In the CA Certificates section, on the NNN certificates line, click Edit.
Select the checkbox to the left of the certificate you want to export.
Click the Export icon.
Click OK.
The certificate is saved (by default) to a file named certauth.cert.