How to configure Pi-hole to block ads across your entire network

I'm sure it's happened to you: you open your browser and are met with a jungle of banners, pop-ups, and trackers that don't let you read a single sentence in peace. While installing an extension like uBlock Origin on your PC solves the problem there, the rest of your home remains unprotected. Your Smart TV, the kids' game console, or your partner's phone continue to load ads and send data to whomever they want, because Traditional blockers don't reach those devices..

This is where Pi-hole comes in, a wonderful tool that acts as a gatekeeper at the entrance to your network. Instead of battling ads on every device, Pi-hole cuts them off at the source. before they even reach your WiFiIt is, basically, a DNS server that filters traffic, making your browsing cleaner, faster and, above all, much more private without having to touch the software of each device you have plugged in. Let's get started with how to block domains only for specific devices using Pi-hole.

How exactly does this filtration system work?

To understand Pi-hole, you first need to grasp the concept of DNS. When you type a web address, your device asks a server, "Hey, what's the IP address of this page?" Normally, this answer comes from your internet service provider or Google. Pi-hole jumps into that conversation. If the device requests the address of a advertising or telemetry serverPi-hole responds that the address does not exist. As a result, the ad is never downloaded, saving bandwidth and loading time.

Unlike browser plugins, which only work within a specific app, this system operates at the network level. This means that blocks ads in appsconsole games and even smart TV menus, which are often a breeding ground for trackers, are all affected. However, it's important to understand that it's not magic: it can't remove YouTube ads because they are served from the same domain as the video, so You'll need to combine it with uBlock Origin or apps like SmartTubeNext for a complete clean.

Required hardware and mounting options

The best part is that Pi-hole is incredibly lightweight and doesn't require a powerful computer. You have several options depending on what you have at home:

• Raspberry Pi: It's the classic option. A Pi Zero 2W is more than enough and consumes barely one watt. If you have a Pi 3 or 4 gathering dust in a drawer, it's time to give it a second life.
• Docker containers: If you already use a NAS (like Synology or QNAP) or have a mini PC with Linux, installing it via Docker is the smartest move, since You don't add extra hardware. and the management is very simple.
• Any old PC with Linux: If you have an old laptop that can no longer handle Windows, install a lightweight distro like Debian or Ubuntu Server and you'll have a robust DNS server.

For physical assembly, it is highly recommended to connect the device via Ethernet cable instead of WiFi to avoid unnecessary latency and ensure that the network does not go down if there is interference.

Step-by-step guide for installation

If you choose the Raspberry Pi method with Raspberry Pi OS Lite, the process is a piece of cake. First, you need to access the terminal via SSH and run the official installation command: curl -sSL https://install.pi-hole.net | bashThe wizard will guide you through several screens where you will need to choose the upstream DNS server (we recommend Cloudflare 1.1.1.1 or Quad9). privacy issuesand confirm that the device has a static IP addressBecause if the IP address changes, your whole house would lose internet access.

Once the process is complete, the system will provide you with a password for the web administration panel. By accessing your server's IP address in your browser, you will enter the control center where you can view real-time graphs of How many requests have been blocked? And which devices are the "noisiest" in your home. It's fascinating (and a little disturbing) to see how often your dishwasher or TV tries to connect to external servers.

Network configuration and optimization

Installing the software is only half the battle; now you need to get your devices using it. You have two main options. The first and most convenient is change the DNS on the routerwithin the DHCP settings. This way, any device that connects to the Wi-Fi will automatically use Pi-hole. If your router is one of those old-fashioned ISP-provided "bricks" that don't allow changes, you'll have to configure DNS manually on every mobile phone, tablet, or console.

For the blocking to be truly effective, don't just stick to the default list. You can add community "Adlists" (like those from Steven Black or OISD) from the admin panel. Just be careful not to overdo it; adding too many lists can cause problems. slow down updates and cause some legitimate websites to stop working. If this happens, simply find the query in the log and add it to the whitelist to solve the problem instantly.

Special cases: Selective blocking and extreme privacy

Sometimes the question arises whether it's possible to block internet access to certain devices or apply different rules. Although Pi-hole isn't a firewall, you can use Groups and Group RulesFor example, you can create a group for children and assign them a blacklist using regular expressions like .* to block all DNS traffic, managing everything from the Pi-hole interface without having to access the router.

For those seeking the "expert level", there is the option to install Unbound with Pi-holeUnbound turns your server into a recursive DNS server, meaning you no longer rely on Google or Cloudflare; instead, your Raspberry Pi queries the internet's root servers directly. This eliminates intermediaries and maximize privacypreventing any company from knowing which domains you are visiting.

Maintenance and prevention of scares

To prevent your family from complaining that "the internet isn't working," a vital trick is to configure a Secondary DNS on the router (for example, 1.1.1.1). If for any reason the Raspberry Pi shuts down or the SD card fails, the devices will switch to the secondary DNS and continue browsing, even if it's with ads, preventing you from becoming your own unpaid tech support.

Remember to keep the system updated by running pihole -up Check regularly and avoid adding aggressive lists when you have traffic, as false positives are common. If you notice a banking website or online payment failing, it's most likely Pi-hole. blocking a validation scriptA quick look at the Query Log and a click on whitelist fixes it.

Setting up this system is one of the best investments of time and money for any tech-savvy home, since for the cost of a couple of pizzas you get clean up network traffic from all your devices. By centralizing DNS management, you not only eliminate annoying ads, but you also regain control over your device telemetry and speed up page loading by avoiding unnecessary downloads. Now you know how to block domains for specific devices using Pi-hole.