title: How to IP-Forwarding for Man In the Middle Attack
body: <p>I`m working on a project about Man In The Middle Attack by ARP poisoning method. </p>
  
  <p>In this project I need to work like as a router. For example suppose In My Lan there is two other device (a modem &amp; a laptop). I says to laptop that I`m the modem to fraud it. whenever the laptop wants to send a packet to outside of the LAN, sends the packet to me!
  All thing I need is I want to send the received packet to the modem &amp; sends the response to victim laptop.</p>
  
  <p>How can I do it programmatically?</p>
  
  <p>Thanks a lot.
  Ya Ali.</p>