All DNS requests that your browsers or apps are about to send first get processed by AdGuard. When you use one of the AdGuard apps that supports DNS filtering, it acts as a buffer between your device and the DNS server. The same applies, of course, to all apps and programs that send any web requests, not just browsers. Very schematically it can be represented like this: That server looks at the requested domain name and replies with a corresponding IP address. Thus, each time you go to a website, your browser sends a request to a special type of server (DNS server). What is DNS? ĭNS stands for "Domain Name System", and its purpose is to translate websites' names into something browsers can understand, i.e. To better understand DNS filtering, first, we should answer the question "What is DNS?".
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