Today I’m going to talk about 3 different free and open source DNS based adblockers for your home. We can use DNS sinkholing today to block ads across a network by blocking the domains which server ads. DNS sinkholing works by maintaining a list of domain names you want blocked, then when the DNS server receives a request for those domain names it resolves the domain to something non existent like 0.0.0.0 or to it’s block page rather than to the legitimate IP.ĭNS sinkholing used to be a corporate specific thing but now its not only common place but extremely easy to set up thanks to the excellent work of the folks behind the Pi-Hole project which, as far as I can tell, were the catalyst behind most or all of the projects I’m going to mention today. However, there was still a need to block websites enter DNS sinkholing. Transparent SSL/TLS Man in the Middling to decrypt and block websites became an extremely difficult and costly endeavor. Specifically what I mean by that is that DNS based website blocking has existed for years as a security tool. Adblocking extension on a PC works fine, but if you don’t have a PC then what can you do? This is where DNS based adblocking comes into play.Īdblocking DNS is technically a new(ish) usage of an old(ish) technology. While that was somewhat tangential it does Segway nicely into my next point. In recent years this training has become increasingly difficult to do as a substantial portion of our new hires aren’t able to set up a virtual machine because they only have an iPad or they use their phone for everything. When people join us we put them through a training program that involves downloading and setting up a Linux virtual machine. We have new adults join us all the time either fresh out of high school or fresh out of college. Here’s some anecdotal evidence I work in tech, big surprise I know. On computers we have the ability to install adblockers like the fantastic uBlock origin but outside of work most people aren’t using a standalone computer anymore. Ads have dominated the internet over the last decade, it’s hard to go to any webpage now without being bombarded by ads taking over most of your screen.
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