Apple does not currently have support for a GlobalProtect-specific VPN configuration payload. According to Palo Alto Networks’ site (https://www.paloguard.com/datasheets/globalprotect-ds.pdf), the underlying protocol used is IPsec/SSL. You may be able to configure your endpoints using the “IPsec” VPN option in SimpleMDM. We suggest contact Palo Alto Networks for further guidance on their suggested settings when configuring Apple devices to work with their VPN products using MDM.