Since macOS 10.15, PPTP support has been dropped and no longer available. But I have to connect to a server throught VPN that only supports PPTP or L2TP without IPSec (No shared key or credentials). I tried the following ways:
- There is no selection of PPTP in the Settings.
- vpn-pptp-macos but PPTP.ppp has already been removed.
- VPN Tracker 365 is expensive.
- Activate VPN on the router if possible.
- Use a Windows machine as the mobile hotspot. First start the mobile hotspot, connect the macbook to this hotspot. Then start the VPN on the Windows machine. Then in the router settings, in the VPN Connection Properities, enable Internet connection sharing to allow other network users to connect through this computer's Internet connection, select the adapter corresponding to the hotspot. You may need to repeat this process when restarting the Windows machine. Ref: windows10vpn