title: WCF No connection could be made because the target machine actively refused
body: <p>I just implemented a simple WCF server using <code>net.tcp</code>. </p>
  
  <p>First, I use <code>127.0.0.1</code> as server address and client able to connect the WCF service.</p>
  
  <p>Everything is Ok. But when I try to use the internal IP <code>192.x.x.x</code> I get an error:</p>
  
  <blockquote>
    <p>No connection could be made because the target machine actively refused it</p>
  </blockquote>
  
  <p>Any idea what may cause this?</p>
  
  <p>Best Wishes</p>
  
  <p>PS: I disabled auth on WCF. Even turn off firewall all...Not worked...</p>