Using cURL to test the Performance of a Website

cURL is an amazing tool (available by default on Macs and Linux) that allows an administrator to remotely transfer data and most commonly used against URLs (i.e., websites). Think of it as a terminal-based browser that doesn’t try to parse the HTML. For example, if you want to get the HTML content for noc.org, all…

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We love to dig (DNS troubleshooting)

We spend a lot of time with DNS, we’re constantly having to investigate issues, analysis outputs, or just try to understand what is going on. When troubleshooting DNS, the best tool is the dig command. Dig comes by default on most Linux distributions and on MacOS (sorry Windows users, you are stuck with nslookup by…

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Registries, Registrars and DNS

NOC.org is a collection of networking tools and services that are designed to make a network administrators life just a tad bit easier. At it’s core is an Authoritative DNS service. Great! But what exactly is an authoritative DNS service? Before we can answer that question, we have take a few steps back and provide…

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