-----Original Message----- From: Thomas York [mailto:straterra@fuhell.com] Sent: Monday, December 06, 2010 2:15 PM To: nanog@nanog.org Subject: ipfix/netflow/sflow generator for Linux
At my current place of work, we use all Linux routers. I need to do some IP accounting/reporting and am currently trying to use Scrutinizer. Scrutinizer can use netstream, jstream, ipfix, netflow, and sflow data without qualms. My only issue is that I can't seem to find any good software for Linux
works with multiple interfaces to generate the flow information. I've
ndsad, nprobe, softflowd, host sflow, and ipcad without much luck. Most of the software only works on one interface (which is useless as I need to do accounting for numerous interfaces).
I've had the best luck with ipcad. The only thing that seems to not work with it is that it doesn't correctly give the interface number in the flow information. It refers to all interfaces as interface 65535. I've tried
fprobe doesn't work properly because it has the input and output interface IDs as both 0. In Scrutinizer, this makes the flow look like all the data came in the interface and immediately left via the same interface. Also, this causes problems when running multiple instances of fprobe. This seems to be the issue with most of the flow software I've tried. -----Original Message----- From: Samuel Petreski [mailto:sp446@georgetown.edu] Sent: Monday, December 06, 2010 3:38 PM To: 'Thomas York'; nanog@nanog.org Subject: RE: ipfix/netflow/sflow generator for Linux I've used fprobe with great success. You can run multiple instances of fprobe for the different interfaces. --Samuel fprobe: a NetFlow probe - libpcap-based tool that collects network traffic data and emit it as NetFlow flows towards the specified collector. WWW: http://sourceforge.net/projects/fprobe -- Samuel Petreski Sr. Security Analyst Georgetown University that tried the config
option for ipcad to map an interface directly to an SNMP interface ID, but that option of the config file seems to be ignored.
Ntop functionally does exactly what I need, but it's extremely buggy. It segfaults after a few minutes, regardless of Linux distro or Ntop version. So..any ideas on what I can do to get good flow information from our Linux routers?