Internet <------------> MT A <--------port forwarding---------> MT B(L2TP SERVER)
L2TP's UDP port 1701/500/4500 / esp
I have an 809 error even though I have forwarded the above 4 ports.
Strangely, it's connected on Android
The connection is not made on the PC.
I tried to modify the registry, but I get an error 809.
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\PolicyAgent]
"AssumeUDPEncapsulationContextOnSendRule"=dword:00000002
Remotely with TeamViewer.