Here is a brief intro to Ettercap a multipurpose sniffer over switched LANs. First read this post about What is Ettercap?, What is Man-in-the-Middle Attack? and something more interesting. We will learn how to use ettercap in next tutorial. For those who don't like command line interface, it's also provided with easy graphical interface.
What is Ettercap?
Ettercap was born as sniffer, but