GlobalProtect Requests System Keychain Access on Mac OS X Clients

• Machine Certificate authentication is used on MAC OS X clients. During the GlobalProtect connection process, the user needs to enter the Local Administrator account credentials to allow access to the System keychain twice.

• Existing GlobalProtect Infrastructure
• macOS endpoints 

• When using Machine Certificates with GlobalProtect on Mac OS X Clients, the certificate must be accessed from the "System" keychain in MAC OS X.  This will cause a Keychain Access prompt to appear twice when the client attempts to access the certificate for verification against both portal and gateway.

As a workaround, you can implement the following steps:

1. Open the Keychain Access application and locate the Machine Certificate issued to Mac OS X Client in the System keychain.
2. Right-click on the private key associated with Certificate and click Get Info, then go to the Access Control tab
3. Click '+' to select an Application to allow
4. Press key combination <Command> + <Shift> + G to open Go to Folder
5. Enter '/Applications/GlobalProtect.app/Contents/Resources' and click Go
6. Find PanGPS and click it, and then press Add
7. Find GlobalProtect.app and click it, and then press Add
8. Save Changes to private key

Note: The steps above allows GlobalProtect access to only THIS certificate and private key.  It will no longer prompt for keychain access, giving users a seamless, no-touch experience with Palo Alto Networks GlobalProtect.

Note: If the workaround provided above doesn't work, please do: 

1. Move the certificate from System keychain to Login keychain
2. Step-1 should then create a prompt similar to below.  Click on "Always Allow"

• The procedure has to be done again every time client is updated.