title: What's the difference between Transport security & Message security in WCF
body: <p>I'm looking into WCF &amp; Security.
  There are several security modes but the big picture is that there are 2 main "layers" you can secure : <strong>Transport or Message</strong>.</p>
  
  <p>Can someone explain this in more depth please?
  What do I have to imagine when I'm securing Transport, how does it work, etc.</p>