It has nothing to do with Bluetooth settings. Those options will always appear on a Bluetooth enabled Mac, whether or not you have any Bluetooth devices set up. I notice on your screenshot that it says Bluetooth is off. I am sure that means it is definitely not a Bluetooth problem.
If you want to change the port configurations, open Network preferences in the System preferences. Select Airport. Click on "Advanced". Select "TCP/IP". You can then configure your port settings.
But do you know why and how you need to configure your settings? You could make things worse if you don't know what you're doing. Make a note of the current settings before you change anything, and at least you can always put things back how they were if you muck it up.
For some expert help, try
http://www.macfixit.com/index.php
You may need to be a subscriber to access the forums, but you will get very knowledgeable advice.