The latest Ettercap source code is available from http://ettercap.sourceforge.net/download.php. Grab the latest tarball and compile Ettercap:
[notroot]$ tar zxvf ettercap-NG-x.y.z.tar.gz [notroot]$ cd ettercap-NG-x.y.z [notroot]$ ./configure [notroot]$ make [root]# make install
Make sure you obtain and install an Ettercap version that is equal to or greater than 0.7.0. Ettercap APIs of versions older than 0.7.0 differ significantly, and are no longer supported.
You can run Ettercap in console mode, curses mode, or GTK mode, the latter of which is shown in Figure 2-1.
Run ettercap -h to discover the plethora of options and features Ettercap provides. See the ettercap manpage for more details on available options and features.
The Ettercap web site consists of a publicly available message board dedicated to providing support in case you experience problems. Access the message board by visiting http://ettercap.sourceforge.net/forum/.