Author: wpadmin

DRY Documentation…

DRY – Don’t Repeat Yourself – is it relevant for documentation? I recently saw this comment on a forum… I’m not sure how useful it is to remove duplication [from the documentation pages]. It’s not code… IMHO, duplication in documentation is a couple orders of magnitude worse than duplication in code (and duplication in code

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Generating Netflow Records

Netflow is a network protocol invented by Cisco that provides granular visibility on network utilization. Routers and switches send (“export”) Netflow datagrams that summarize traffic through them to a Netflow Collector program that displays the data. This gives visibility into “who’s using the network?” Virtually all Netflow collectors are able to process Netflow version 5

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nfsen-dockerized Netflow Collector

A lightweight Netflow collector and web display based on NFSEN/NFDUMP in a Docker container. NFSEN and NFDUMP are documented and hosted at SourceForge.net This container listens on ports 2055, 4739, 6343, and 9666 for netflow, ipfix, and sFlow exports. It displays the collected data in a web interface. Check the Github repo. The files from

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Webview Netflow Reporter (wvnetflow)

Webview Netflow Reporter is a lightweight Netflow collector and web display tool based on wvnetflow and flow-tools in a Docker container. Webview Netflow Reporter was created by Craig Weinhold craig.weinhold@cdw.com. The original wvnetflow site is hosted at SourceForge.net. The Dockerfile is available from Github. Pros Pretty graphs – Displays stack charts of the kinds of

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Netflow Collectors for Home Networks

Now that LEDE Project has an official release, I hungered for a way to see what kinds of traffic is going through my network. I wanted to answer the question, “who’s hogging the bandwidth?” To do that, I needed a Netflow Collector. A Netflow Collector is a program that collects flow records from routers to

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Getting Started with React!

I’ve been playing with the spate of new Javascript technologies, and ran into a problem. As a beginner in this new ecosystem, I chose one of those big “starter kits” because I wanted to avoid the hassle of configuring all the tooling (see Javascript fatigue). But there was so much boilerplate that it was hard

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Update: VW TDI Diesel Goodwill

A couple news items on the VW Diesel Goodwill Package: I did get my 2.0L Goodwill package. It took about four weeks to arrive, and then I promptly used more than half of it on transmission service at VW. Sigh. They have announced a Goodwill Package for owners of 3.0L diesel engines. That program expires

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Bufferbloat on Packet Pushers

Back in October, I had the pleasure of chatting with Ethan Banks on the Packet Pushers podcast. In it, we talked about the definition of bufferbloat, and how it harms the performance of VoIP, gaming, and general internet use. (It’s the reason our children say, “The internet is slow today, Daddy.”) I also described how

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Debugging Webpack app’s with WebStorm 2016.1

[Update Sep 2016: I just posted a support request with Webstorm asking for an updated tutorial on this subject. It’s Ticket WEB-23528] It recently became possible to debug both server-side and client webpack applications with JetBrains’ WebStorm. The instructions came from a ticket WEB-20781, but they’re not in one place, so I figured I would

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