Cisco Blog

Hi,

There is some time since I use this software:

http://manageengine.adventnet.com/products/netflow/cisco-netflow.html

It is windows based and it's free to use for 2 interfeces.

Hope that this will help you!

You should learn unix (or linux) since your favorite brand of routers are based on unix.

Try Fedora or Ubuntu. You have have all the cool stuff like a tftp server, a syslog server, etc.

Seriously, learn Linux ;) Fedora comes with flow-tools which provides the collector and tools. Flow-scan is a good tool do interpret the data, and I've been working on writing a peering analysis tool at http://taind.sourceforge.net/

Sean

I have used solarwinds, manageengine for netflow analysis and Crannog-Software's (bought by Fluke) Netflow Tracker is the best I have seen.

The interface is so intuitive and really easy to use, I believe that the eval version works for 30 days.

I'd love to learn Linux/Unix...it's just one of those things where I get bogged down with useless junk...like finding a network card driver and ensuring IRQ ports are configured correctly. Ugh.

Thanks for the links above! I'll check them out.

Here's an article on NetFlow from TechRepublic:

http://blogs.techrepublic.com.com/networking/?p=302&tag=nl.e115

and one of the embedded URLs is a cisco.com page with free NetFlow software links:

http://www.cisco.com/warp/public/732/Tech/nmp/netflow/partners/freeware/index.shtml

Enjoy, :D

commercial - Peakflow from arbor

free - ntop

You might want to take a look at http://nfsen.sourceforge.net/ & http://nfdump.sourceforge.net/.

Take a look a Plixer scrutinizer. It's the best net flow analyzer I have found. While not 100% free, the free version works quite well.

http://www.plixer.com/products/scrutinizer.php

You can try ntop with netflow configured, it works like a charm, but Cronnog is still the better tool so far.

http://www.ntop.org/overview.html

Ive been looking at ntop.
Much as id love to spend time setting this up on linux i simply dont have time. Ntop is open source but you need to compile it yourself if you want to run on Windows. You can buy a pre-compiled version from ntop (www.ntop.org) or you could try this free pre-compiled version.

http://www.openxtra.co.uk/freestuff/ntop-xtra.php

It might not be the latest version but it seems to work OK for me.

I would second scrutinizer it does come with a cost but their support is excellent and the product is Windows point and click easy. Alarms can be generated based on thresholds defined, real time stats, reporting so on and so on. The full blown version isn't free but it is really cheap compared to the other options out there.

There is a start-up that has a search engine designed to help sort and analyze netflow data for security. You can see a demo of the product here.


http://www.packetanalytics.com/demo.php


I pinged them and they mentioned it would available for download in January.

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