This post is part of the series on building my new Raspberry Pi; this series is a sub-series of the Adventures with a Raspberry Pi.
With Pi-hole installed and configured, the final step is to change the DNS settings on the router to point to the Pi-hole rather than the old DNS servers. In my case, they were pointing to OpenDNS on the router, so it as a case of changing them to look to the IP address configured on the Pi-hole which is set to use OpenDNS.
Every router is different in how DNS servers are configured; if your router doesn’t allow the DNS servers to be changed, you could change the DNS settings on your computers instead; bear in mind this approach takes far more effort.