Port forwarding doesn't work when using external USB adapter

[albe52]

I'm stumped. I have the Abyss web server software set up (default port 80) on my Win 7 laptop, and forwarded in my RT-AC66U router. It works fine except when I plug in an AC600 WiFi USB adapter to the laptop that the Abyss software operates on. In that instance port 80 is closed and the server inaccessible. Pull the USB adapter, and reconnect to the router using the default on-board nic on the laptop and port 80 is open again. What am I missing? Thx!

 

[RMerlin]

Check your computer's firewall - it will have different rules for different interfaces.

 

[albe52]

Check your computer's firewall - it will have different rules for different interfaces.

Thanks RMerlin. Turns out I didn't realize that switching wifi nics on the laptop changed the IP. So I had to configure the port forward rule for 80 differently.