title: Asp.Net Core + Angular = Protect Api without login
body: <p>I have a .net core + angular application that doesn't have login functionality.
  I don't need login but i want to have an "admin panel" type functionality.</p>
  
  <p>For example i want to add posts to my site.</p>
  
  <p>I understand that i can't use api / addpost / myPassword or whatever complex string known only by me
  because there are ways to see that.
  How i can protect my api without implementing register/ login functionality?</p>
  
  <p>Thanks!</p>