When you try to create a PPTP VPN connection on your iOS device or Mac, you might see this alert:
This happens because the PPTP protocol doesn't provide strong protection for your data.
Even though PPTP protocol is still available on iOS 9 and earlier or OS X v10.11 and earlier, it isn't available for iOS 10 and macOS Sierra. Try one of these other VPN protocols for user-based authentication that are more secure:
- Cisco IPSec
- SSL VPN clients on the App Store such as those from AirWatch, Aruba, Check Point, Cisco, F5 Networks, MobileIron, NetMotion, Open VPN, Palo Alto Networks, Pulse Secure, and SonicWall