Can I choose WiFi over Ethernet LAN? [duplicate]

1. Click the Start Button
2. Right Click "Network" and then left Click Properties
3. From the "Network And Sharing Center" window click "Change Adapter Settings"
4. On the "Network Connections" window, press the ALT + F key on your keyboard to being up the menu bar
5. Click the "Advanced" menu and then "Advanced Settings"
6. In the "Advanced Settings" window you will see the "Adapters and Bindings" tab and under "Connections" you will see the order they are in, you can use the arrows to the side to move the connection priority up and down.

You can deal with this by fiddling with your routing table. You don't say what OS you're running - but on Linux you could do:

# Dump kernel routing table:
route -n
# Delete the default gateway which uses your ethernet cable:
route del default gw 1.2.3.4

now you'll likely be left with just the default route for the wireless connection (assuming it got one), but all traffic to your LAN will still be sent over your wired connection.

There's probably better ways of doing this using network-manager (or whatever you have), which will make it persistent - but the goal remains the same, you want to remove the default route from your wired connection and leave just that of the wireless.

You can prioritize network connections by doing the following.

1. Open up Network and Sharing center
2. Click on Change adapter settings
3. Hit ALT

4. Go to the advanced menu
   

5. Now you can order your network connections. The more higher your network adapter is, the more Windows will prioritize it.
   

This image is from Windows XP but should look more or less the same in Windows 7.

You can simply disable the wired connection in the Device Manager. This will automatically let the wireless do the job. Enable when finished.