How to Install Certificates on OS X El Capitan

Mac OS X El Capitan: How to Install the Intermediate Certificate

1. Save the ZIP file your_domain_com.zip onto your server, and extract the SSL Certificate file (your_domain_com.crt) and the Intermediate Certificate file (XYZ.crt) to a folder.
2. Open Keychain Access.

   In the Finder window, under Favorites, click Applications, expand Utilities, and then double-click Keychain Access.

   
3. In Keychain Access window, under Keychains, click System.
4. 
5. Drag-and-drop the XYZ.crt file into the System folder.
6. 
7. Enter the administrator's password and click Modify Keychain to authorize the change.

Mac OS X El Capitan: How to Install Your SSL Certificate

1. Open the folder containing your SSL Certificate file (yourdomain_com.crt).

   Keep this folder open so that you can readily access this file.

2. Open the Server App.

   In the Finder window, under Favorites, click Applications and then double-click Server.

   
3. In the Server App window, under Choose a Mac, do one of the following options to select the server on which you want to install your SSL Certificate.
   • To install the certificate on this server
     1. Select This Mac – YourServerName and then click Continue.
     2. Enter your Administrator Name and Administrator Password and then click Allow.
   • To install the certificate on another server
     1. Select Other Mac – YourServerName and then click Continue.
     2. Enter your Host Name/IP Address, your Administrator Name and Administrator Password and then click Allow.
     
4. In the Server App window, under Server, click Certificates.
5. 
6. On the Certificates page, double-click on the Pending certificate that was created when you generated the CSR.
7. On your certificate's page (i.e. www.yourdomain.com), under Certificate Files, in the Drag files received from your certificate vendor here box, drag-and-drop your SSL Certificate file (yourdomain_com.crt).
8. 
9. Click OK.
10. 

Mac OS X El Capitan: How to Assign Your SSL Certificate to Services

1. In the Server App window, under Server, click Certificates.
2. 
3. On the Certificates page, in the Secure services using drop-down list, select Custom.
4. In the Service Certificates window, in the Certificate drop-down list, select your new SSL Certificate for each Service to which you want to assign it.

   For example, in the Certificate drop-down list for Websites (Server Website – SSL) select your new SSL Certificate.

   
5. When you are finished, click OK.
6. You have successfully installed, configured, and assigned your SSL Certificate to your respective Services.