oops my apologies I somehow missed your response from a couple days ago.

1. First thing you need to do is set up a static ip address: How To setup a Static IP Address

2. Set up a port to forward; find your device brand & model here PortForward.com - Port Forwarding Guides Listed by Manufacturer and Model & click on link, then click on link top right of page to skip advertisement. Which port to choose? I'd recommend one between 49152 - 65535

Depends on router, however often it's best to reboot BOTH the router & the computer after doing a port forward. This sets the changes into motion. (How to reboot router may vary for each brand or model after saving settings. Some routers have a reboot option. Some others simply disconnect power to router for a minute does the job.)

3. Settings for LW: Manual port forward instructions & sample image. Use same port as you used above.