How to stop autocad from accessing internet

Hi all,
I am an autocad user. I use autocad to design in 2D and 3D. Autocad is a great creation of autodesk that makes our imagination true. But mu problem is I use internet connection of low bandwidth. And when I use autocad it uses my internet connection to contact with autodesk. I know this will not do any harm to my computer but it consumes most of my bandwidth and while using autocad I can not access internet because of it. So I decided that I need to stop autocad from accessing internet. But I do not know the procedure. So if you guys have any solution then please help me in this matter.
