title: SOCAT to redirect UDP don't work!
body: <p>I'm trying to transmit data in UDP datagrams into a client in external location to a pc in my local lan.
  But my network is over a ADSL modem sending to a pc with Slackware, this pc redirect packages into other pcs.
  I'm using socat to redirect UDP:</p>
  
  <pre><code>socat -v udp-listen:1935,fork,reuseaddr udp:192.168.0.40:37000
  </code></pre>
  
  <p>In LAN the conection is fine, but external IPs don't work.
  Somebody help?</p>