From: Murat Kaipov <mkaipov@outlook.com> To: "'Eliezer Croitoru'" <eliezer@ngtech.co.il>, <nanog@nanog.org> Date: 11/14/2014 02:37 AM Subject: RE: Linux router traffic monitoring, how? netflow? Sent by: "NANOG" <nanog-bounces@nanog.org>
Hello Eliezer. Netflow will be the best solution to find the host that's generate load. First you need decide what netflow analyzer you'll use. I know about some plugin to Cacti. Than you need install IPT-NETFLOW to your Ubuntu router. Also you have another way, you can monitor (snmp traffic) all ports on switches and then find analyze. B.R. Murat
-----Original Message----- From: NANOG [mailto:nanog-bounces@nanog.org] On Behalf Of Eliezer Croitoru Sent: Thursday, November 13, 2014 8:10 PM To: nanog@nanog.org Subject: Linux router traffic monitoring, how? netflow?
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Hey all,
I have a tiny linux router based on ubuntu and sometimes I get a massive load of UDP traffic because of one of the PCs in the network. Usually I handle the situation with a strict block using iptables. The main issue is to find it due to the load. For now I am monitoring the traffic load using MRTG but it won't notify me. I can try to use nagios to monitor traffic load for a period of time but before I start working on it I want another person opinion and
If you go the netflow route you might consider FlowViewer/SiLK for the collector/analyzer. It is web driven and allows you to easily establish traffic thresholds which will generate an alert email. https://sourceforge.net/projects/flowviewer Joe "NANOG" <nanog-bounces@nanog.org> wrote on 11/14/2014 02:35:44 AM: options.
I have seen netflow in the past but never actually used it.
Thanks in advance, Eliezer -----BEGIN PGP SIGNATURE----- Version: GnuPG v1
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