Sorry for the noob question, but I have two projects, a node webapp, and a set of webservices that sit behind the webapp. Only the webapp needs to see the webservices, they do not need to be viewable to the public.
You shouldn't need a domain for your internal webservices. You should just be able to access them using your IP and the relevant port.
For instance, let's say you have a service listening on port 4564 and...