VPN over PPTP on mac os sierra : <p>Lately I discovered that connecting to a VPN via PPTP option has been removed in the new mac os - sierra.
I tried multiple application to do so - all failed.
How can I connect to my VPN over PPTP?</p>

<p>ps. I don't want to use L2TP because I don't have a pre shared key (I also don't know what it is).</p>
