Howto install ettercap via fink on Mac Os X
From How2s
The easiest way to get ettercap (http://ettercap.sourceforge.net) running on Mac OS X is via fink (http://fink.sourceforge.net/).
Install fink, then make sure you are accessing the unstable trees:
In the terminal, enter
sudo pico /sw/etc/fink.conf
When the editor opens the file, add at the "Trees:" line:
unstable/main unstable/crypto
Like this:
Trees: local/main unstable/main unstable/crypto stable/main stable/crypto
Then press Control-O, Return, and control-X to save and close the file.
run
fink selfupdate
(this will download and compile for a while), then run
fink install ettercap
