Supported VPN types in macOS
Since the release of macOS Sierra and iOS 10, Apple removed from the built-in VPN client, the support for PPTP VPN connections.
The reason for this is that the PPTP protocol has several security vulnerabilities.
With this decision Apple encouraged their costumers to move and use more secure protocols such as:
– L2TP/IPSec
– IKEv2/IPSec
– Cisco IPSec
– SSL VPN
Common VPN errors in macOS
One of the common errors that occurs with the built-in client is the error:
could not find the PPP kernel extension
This error occurs because macOS caches the kernel extensions to speed up the boot time.
The solution is to force macOS to rebuild the list of kernel extensions.
To do this, open Terminal, and then issue the command:
sudo touch /System/Library/Extensions
After this command, reboot your computer.
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