title: I can't redirect traffic from port 80 with iptables
body: <p>As testing I want to redirect traffic from port 80 at a simply webserver with nc</p>
  
  <p>If I run the follow command:</p>
  
  <pre><code># iptables -t nat -A PREROUTING -p tcp --destination-port 80 -j REDIRECT --to-port 8081
  
  # nc -l -p 8081
  
  # echo  1 &gt; /proc/sys/net/ipv4/ip_forward
  </code></pre>
  
  <p>I attend that all request http are shown in output in nc, right?</p>
  
  <p>but the nc output is nothing, empty....</p>
  
  <p>the version of iptables is v1.4.14
  something wrong?</p>