What is the acting layer of OpenVas?

Building from Source and Advanced Topics Greenbone Management Protocol (GMP)
1

Hi.

I have one doubt, what is the layer who OpenVas act? I need these information, can you guys help me?

Example Layers:

  1. Physical layer.
  2. Data link layer;
  3. Network layer;
  4. Transport layer;
  5. Session layer;
  6. Presentation layer;
  7. Application layer;