Flow-tools is a set of utilities for collecting and storing NetFlow
data, and doing some limited analysis of it.

NetFlow is a Cisco-developed protocol for transferring network traffic
flow information (usually from a router or switch) to another system
that collects and stores this information. More information on NetFlow
is available at

    http://www.cisco.com/warp/public/cc/pd/iosw/ioft/neflct/tech/napps_wp.htm
