REDIR - Unbound DNS for Adblock

This article introduces REDIR, aka "redirection module", an extension to Unbound DNS that I have developed for very quickly answering queries of blocked domains (ads, trackers, malware sites and etc) and requires little extra resources. For example, a fresh instance of Unbound with REDIR enabled occupies less than six Mbyte…

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EDNS Client-Subnet

The problemA recursive DNS resolver such as Google Public DNS or your ISP's DNS server resolves domain names into IP addresses. Popular websites or services are usually hosted on Content Delivery Networks (CDN) where a domain name could resolve into different IP corresponding to servers in disperse locations. In such…

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Public DNS - Cloudflare v. Google

Google or Cloudflare? I think that's a common question for a non-trivial number of people. Here is my little experiment. The result concludes that Cloudflare DNS is fast and a clear choice at least for my point of presence on the Internet. First, I need a tool to measure and…

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