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<p class="MsoNormal">The ELK stack does a good job of collecting netflow records with the addition of Filebeat. Check out my tattle-tale tool that collects netflow data:
<a href="https://github.com/racompton/tattle-tale">https://github.com/racompton/tattle-tale</a> It has numerous rules in logstash/conf.d to try to just look for spoofed DDoS amplification requests but if you remove those rules (except for
<a href="https://github.com/racompton/tattle-tale/blob/main/logstash/conf.d/40-ifName.conf" title="40-ifName.conf">
<span style="color:windowtext;text-decoration:none">40-ifName.conf</span></a><o:p></o:p></p>
<p class="MsoNormal">and <a href="https://github.com/racompton/tattle-tale/blob/main/logstash/conf.d/50-reverse-dns.conf" title="50-reverse-dns.conf">
<span style="color:windowtext;text-decoration:none">50-reverse-dns.conf</span></a>) it should be a pretty nice netflow collection solution. If you are looking for a free solution to identify DDoS attacks from netflow and generate Flowspec rules, check out
<a href="https://github.com/pavel-odintsov/fastnetmon">https://github.com/pavel-odintsov/fastnetmon</a><o:p></o:p></p>
<p class="MsoNormal">Also, here’s a doc for best practices when implementing Flowspec:
<a href="https://www.m3aawg.org/flowspec-BP" title="https://www.m3aawg.org/flowspec-BP">
https://www.m3aawg.org/<span style="color:#070706;background:#FFEE94">flowspec</span>-BP</a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">-Rich<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b><span style="color:black">From: </span></b><span style="color:black">NANOG <nanog-bounces+rich.compton=charter.com@nanog.org> on behalf of Joe Loiacono <jloiacon@gmail.com><br>
<b>Date: </b>Monday, May 16, 2022 at 1:11 PM<br>
<b>To: </b>NANOG list <nanog@nanog.org>, Matthew Crocker <matthew@corp.crocker.com><br>
<b>Subject: </b>[EXTERNAL] Re: Free-ish Linux Netflow collector/analyser options<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<strong><span style="font-size:10.0pt;font-family:"Calibri",sans-serif;color:white">CAUTION:</span></strong><span style="font-size:10.0pt;color:white"> The e-mail below is from an external source. Please exercise caution before opening attachments, clicking
links, or following guidance. </span><o:p></o:p></p>
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<p>Try FlowViewer (analyzing, graphing, tending software) + SiLK (robust, high-performance capture software from Carnegie-Mellon).
<o:p></o:p></p>
<p>Pretty full netflow analysis package; free.<o:p></o:p></p>
<p>See: <a href="http://flowviewer.net">http://flowviewer.net</a><o:p></o:p></p>
<p>Joe<o:p></o:p></p>
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<p class="MsoNormal">On 5/16/2022 2:34 PM, Matthew Crocker wrote:<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I’m looking for a free-ish Linux open sources Netflow collector/analyser. I have 5 Juniper MX routers that will send IPFIX flows to for an ISP network. I’m hoping it is something I can run in AWS/EC2 as
I don’t want to worry about storage again in my lifetime. Does anyone have any recommendations?</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">For reporting I would like to generate basic usage reports to/from IP/Subnet/ASN. It would be great if it could also detect DDoS and activate flowspec back into my core routers but that isn’t a requirement</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Thanks</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">-Matt</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
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