Dnsmasq is a libre DNS and DHCP system that allows anyone to run a DNS server to resolve domains. Normally to block domains and ads, users on most operating systems can edit their /etc/hosts file or use one of the many existing ad-blocking hosts collections available online. However, if you’re trying to block ads over your entire home network and do not have access to your router’s hosts file, then setting up your own DNS server can be very advantageous.
