1yr Old Treeing Walker/Redbone Coonhound Mix

Have a 1yr old Treeing Walker Redbone Coonhoumd Mix. Have had him since he was 12 weeks old. He's always been a bit of a barker but it has gotten significantly worse. He barks at every little thing that he hears around the house, when he wants something from us including our food. He has also become very protective and aggressive to people coming onto the property (when he was a pup he was always friendly to everyone) I've tried just about every tip I've found on the internet. Any suggestions would be awesome. My main concern is the barking as it does not stop and we have a 2 year old where naps are a bit challenging at times...