|You just need to forward port 21 (ftp). You need to know the LAN IP of the target PC and your external (internet) IP address. You create the forward on your router telling it:|
Send port 21 to IP # xxx.xxx.xxx.xxx
Where xxx.xxx.xxx.xxx is the LAN (internal) IP of your laptop.
You also need to have the ftp software running on the target laptop so it can respond to the incoming ftp request.
When all that is setup, you ftp to the external IP of your home network, the port forward will send the incoming ftp (port 21) session to your laptop which should answer.
It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.