nanog mailing list archives

RE: ipfix/netflow/sflow generator for Linux


From: "Thomas York" <straterra () fuhell com>
Date: Mon, 6 Dec 2010 16:15:59 -0500

Never heard of it. I'll give it a shot. Another project that uses argus also
looks interesting.. http://nautilus.oshean.org/wiki/Periscope

-----Original Message-----
From: Ken A [mailto:ka () pacific net] 
Sent: Monday, December 06, 2010 4:04 PM
To: nanog () nanog org
Subject: Re: ipfix/netflow/sflow generator for Linux

Have you considered argus?
It can deliver "argus flows" from multiple interfaces.
 From http://www.qosient.com/argus/ :

Argus can be considered an implementation of the architecture 
described in the IETF IPFIX Working Group. Argus pre-dates IPFIX, and 
the project has actively contributed to the IPFIX effort, however, 
Argus technology should be considered a superset of the IPFIX 
architecture, providing "proof of concept" implementations for most 
aspects of the IPFIX applicability statement. Argus technology can 
read and process Cisco Netflow data, and many sites develop audits 
using a mixture of Argus and Netflow records.

Ken


On 12/6/2010 2:44 PM, Thomas York wrote:
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

-----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
that
works with multiple interfaces to generate the flow information.
I've
tried
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
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?






--
Ken Anderson
Pacific Internet - http://www.pacific.net




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