Hi,
please, excuse me because my english is poor
I was building a softflowd add-on for brazilianFW and Coyote Linux. Softflowd is flow-based network traffic analyser capable of Cisco NetFlow™ data export. Softflowd semi-statefully tracks traffic flows recorded by listening on a network interface and these flows may be reported via NetFlow™ to a collecting host.
I use NTop to collect and visualize flows sended by softflowd.
You can download the package at:
http://www.linuzito.com.ar/~esteban/sfd.tgz
Regards,
Esteban