Have you tried port forwarding the device? Routers have NAT which behaves like a firewall.


1. First step is always setting up a Static ip: PortForward.com - Free Help Setting up Your Router or Firewall

2. Then set up a port forward rule within the router, & settings for LW: Port Forwarding for the Motorola SBG 900

Make sure your computer software firewall (should ONLY be one active) is configured to allow LW full access: User Cant Connect - LimeWire
If using a 3rd party firewall then disable Window's firewall.