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Adblockers stop publishers serving ads to (or even seeing) 1bn web users - Press Gazette
(pressgazette.co.uk)
this post was submitted on 20 Jul 2025
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I have my entire network running with a DNS that blocks all advertising by default. And then, just to make absolutely certain, I run browsers with UBlock Origin on them.
Any good guides you know of to set that up?
Pi-hole. You’ll want to run two, because machines will use both a primary and a secondary server for their DNS requests. If you don’t want to buy a pair of raspberry pi’s, you can run it in Docker, which basically keeps it isolated to its own tiny virtual machine. So you’d just need to spin up a pair of docker containers to run the pair of pi-holes. If you’re using Docker, they’ll need a pair of volumes too, or else they’ll lose all of their data every time they reboot.
You’ll want this to be on a machine that is running 24/7, because any time it shuts down, your internet will essentially stop working. That’s why lots of people end up just throwing a few raspberry pis in a closet and forgetting about them.
Once it’s installed, you’ll need to load it with block lists. The default ones are pretty basic. I’d just google something like “pihole blocklists” and figure it out from there. Each list will be a URL, which allows the pihole to pull updates, (which you can tell it to do via the built-in web UI).
Its actually not easy to run two of them since they are not designed for using a shared disk (you can get corrupted data). Its also not necessary, you can just leave the secondary dns server blank.
But if you want two because you want high availability in case one of your piholes goes down, you can rsync the settings between the two machines every 5 minutes or so. Its important to keep them in sync that way.
The secondary DNS isn’t for redundancy; machines will split requests across the two for load balancing. If you only have one running, you’ll end up with ads slipping through as the device still uses the default secondary DNS.