May 20, 2013

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What You Should Know About DNS

This post is from an earlier incarnation of this blog. I’ve gotten a few requests to republish it (the original post date was 2009-06-23), so here we go.

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Recently, I’ve found myself typing quickly into my IM client to a few friends, explaining how a DNS change of some kind was going to work. It occurred to me that I should probably just write something up that would explain some DNS basics.

DNS is a big topic. I’m not even going to attempt to cover all of it here. If you really want to dig into it, then I recommend that you get and read the bugs book. A lot of this book is devoted to talking about the BIND software package (more on this later), but it’s still pretty much the reference for understanding DNS. If, on the other hand, you fall into the overwhelming majority of people who need to “get it”, but don’t need every detail, hopefully this article will help you out.

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