This document provides instructions for installing a SSL certificate for MAC OS X 10.7. Before starting, you will need to download your certificate.
1. Open up Profile Manager

2. Choose Manage Certificate

3. Replace certificate with the SSL certificate you downloaded.

4. Drag the certificate here, and Choose Replace certificate button

5. Then open up KeyChain, you need to configure the certificate to make sure it’s trusted.
6. Download the Intermediate CA certificate.
Select the appropriate Intermediate CA certificate for your SSL Certificate type.
7. You can simple drag the Intermediate CA certificates to the System KeyChain.

8. From the KeyChain, examine the certificate.
9. Once you have examined the details, expand the Trust section and choose “Always Trust” for both
“X.509 Basic Policy” and the “When using this certificate” pull-down.
10. Finally, Proceed by clicking the “Always Trust” button.

11. Check to make sure the installed certificate is correctly assigned to the web service.

To verify if your certificate is installed correctly, use the Installation Checker