title: Symfony simple authentication system
body: <p>I have a project that use FOS User Bundle. It works fine.
  FOS User Bundle manage Customer authentication/</p>
  
  <p>But i want to give an access to suppliers to a single page.
  I do not want to create user accounts for suppliers because they need to access to a unique webpage.</p>
  
  <p>I am looking for the simplest way to authenticate my suppliers in my web application. The suppliers table already contains some fields that can be use as login and password. Passwords are not encrypted but it does not matter.</p>
  
  <p>So my question is, what is the simplest way to show an http authentication popup when i wall the page, check if the supplier exists in the database, and display static information ?</p>
  
  <p>I do not want to work with FOSUserBundle and stuff. I want the simplest way.</p>