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How does a DNS blocker know what requests are caused by what site? It's a stateless protocol.
by supergauntlet 7y ago
How does a DNS blocker know what requests are caused by what site? It's a stateless protocol.
- ztoben 7y agoYeah, that was a misunderstanding on my part. I suppose for their whitelist/blacklist to work with regex matching the ads would have to be served from a similarly named domain. Like facebook.com vs ads.facebook.com, and you'd have to whitelist *facebook.com. And if they were getting ads externally you'd have to whitelist those ads for every site that you visit.