We cover settings, firewalls and a lot more in the CNET Networking Forum. You can tell folk don't do a lot of device WiFi when they tell us the laptops work fine. These are not Windows or laptops so we have to make small changes to help the devices along. Some folk call that a defect which while I agree, the only fix is to return the product today.
More reading at link to follow.
My Samsung TV UN55c8000xfx2a using a Samsung USB wireless lna adapter model wis09abgnx/xaa which identifies and connects wirelessly to my Linksys Router model EA2700 using Comcast cable's signal and my PC's Home Network using Win 7. Connection is usually with 3 bars.
The message I get is "Connection established but not working. Check TV or connection devices network settings"
No matter what I do, I cannot establish a workingSmart TV Internet operation.