title: Windows Authentication with Ruby on Rails
body: <p>I have website running in my intranet, currently all users login to the website using LDAP - they need to write down their username and password.</p>
  
  <p>I know that in ASP.NET, I can have Windows Authentication, which will remove the login process in my intranet.</p>
  
  <p>How can I do this in Ruby on Rails using Nginx? I saw options for using IIS as proxy.. before I will quit and do this, do you have any idea?</p>