Press the F5 key on your keyboard to access Advanced setup.
Click Web and Email and then expand the SSL/TLS section.
Click Edit next to List of known certificates.
In the List of known certificates window, click Add. In the Add certificate window, click URL.
Figure 2-2 Click the image to view larger in new window
Copy the URL of the website whose certificate you are importing and paste it in the URL address field. Click OK to close the Load certificate from URL window. In Scan action section select Ignore and click OK to close the Add certificate window.
The newly added certificate will be displayed in the List of known certificates window. Click OK to close the window and click OK again to exit Advanced setup.
Re-open your web browser and verify that you can access the secured site.