NAt/Firewall Config for PPTP Server

[tuaris]

Unfortunately it's still not possible to do without a PPTP server.  It's simply not feasible to use OpenVPN, Wireguard, Tinc, etc without having to install additional software on OS's, devices, etc.

So I have resorted to setting up a FreeBSD VM that's running mpd5.

What do I need to do on the OPNSense Firewall to allow traffic to the PPTP server?  I already did the usual NAT port forwarding for TCP port 1723 and the GRE protocol.  While I can "connect" it's failing on LCP paramater negotiation "LCP: parameter negotiation failed".  I suspect the auto-created firewall rule is wrong?

[Patrick M. Hausen]

Set the associated firewall rule to "Pass" in your port forwarding.