Pihole is an open-source software project that can be used to block ads, trackers, and malicious websites on a network. It is designed to run on a Raspberry Pi and can be used to improve network performance, protect privacy, and provide users with a more secure and faster network experience.
To set up Pi-hole, a device such as a Raspberry Pi is needed, and all devices on the network must be pointed to use the Pi-hole as their DNS server.
It can also be used to block specific websites or types of content by adding them to a blacklist or whitelist. The built-in web interface provides statistics on blocked requests, query types, and top domains, and troubleshooting can be done through the Pi-hole documentation, community forums and other resources.
It is free to use and should not have any significant impact on network performance.