It seems to be enough to open the ports that the LAN-pc uses as local ports for the connection to the server. I'm not sure in what range those ports can be exactly but it seems safe to take ports 1000 up to 2000

So in Nat32 startup file:



ppmap add tcp 1000:2000 192.168.0.2 1000

ppmap add udp 1000:2000 192.168.0.2 1000



Does this help you ?

Let your dad (the administrator dude) open these ports and direct them to your pc's IP adress on the LAN and let me know if that helps.