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Formal Metadata

Title
unwind(8)
Subtitle
A privilege-separated, validating DNS recursive nameserver for every laptop
Title of Series
Number of Parts
490
Author
License
CC Attribution 2.0 Belgium:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
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Content Metadata

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Abstract
DNS is easy. You type fosdem.org in your browser's address bar, hit enter and you will be greeted by your favorite open-source event's start page. Actually... We will introduce unwind(8) - an always-running, validating DNS recursive nameserver, answering queries on localhost (127.0.0.1). We will explain its privilege-separated design and show that it is secure to run this daemon by default. We will then show how its novel approach of observing changes in network location and actively probing the quality of the local network improve the user experience in DNS resolution. The focus will be on laptops that move through many networks, some good, some bad, some outright hostile. We will compare unwind(8) to prior solutions and show how its design enables it to run without user intervention.