Are you using USB or ethernet cable between your device & computer? If USB, then if you have an ethernet card, change over to ethernet as USB struggles with internet cable bandwidth. If no ethernet card, then make sure your USB cable is the only one connected to that port (not others like keyboard, printer, etc.)
I don't know where your firewall issue is coming from. AFAIK your device is simply a cable modem. I wonder if your ISP is responsible. You could try changing listening port. Go to LW's menu bar, Tools>Options>Advanced>Firewalls & change the listening port to one between 49152 - 65535 such as 64049. Press apply. |