Network-wide ads amp; trackers blocking DNS server Privacy protection center for you and your devices AdGuard Home is a network-wide software for blocking ads amp; tracking. After you set it up, it #39;ll cover ALL your home devices, and you don #39;t need any client-side software for that. It operates as a DNS server that re-routes tracking domains to a “black hole”, thus preventing your devices from connecting to those servers. It #39;s based on software we use for our public AdGuard DNS servers, and both share a lot of code.