Change Mac Software Update Server to a local server
If you are not using Client Management, use the defaults command in Terminal to point unmanaged client computers to a Software Update server. You must be an administrator to use the defaults command. On the unmanaged client, open Terminal enter the following command: sudo defaults write /Library/Preferences/com.apple.SoftwareUpdate CatalogURL http://su.example.com:8088/index.sucatalog Substitute your Software Update Server’s fully…