How to Turn Your Raspberry Pi into a Network-Wide Ad Blocker with Pi-hole: Complete Guide

Browser extensions block ads effectively on desktops, but they often fail on smartphones, tablets, and smart TVs. As a Raspberry Pi enthusiast with years of home networking projects under my belt, I've relied on Pi-hole to create a seamless, network-wide ad-blocking solution. This guide walks you through setting up Pi-hole on your Raspberry Pi, blocking ads across all connected devices—from laptops and PCs to phones and tablets.

Note: For background on Pi-hole and its benefits, review the official documentation or introductory resources first.

What You'll Need

To follow this proven setup, gather these essentials:

• A Raspberry Pi running Raspberry Pi OS (formerly Raspbian). If needed, download the latest version and flash it using Raspberry Pi Imager.
• Compatible power cable for your Pi model.
• USB keyboard and connection method.
• HDMI or micro-HDMI cable (model-dependent).
• External monitor or TV.
• Ethernet cable or Wi-Fi access.

With these ready, you're set to build a robust ad blocker trusted by privacy-focused users worldwide.

Install Pi-hole on Your Raspberry Pi

Connect your keyboard, monitor, and peripherals, then power on the Pi.

Open the Terminal from the Raspberry Pi OS menu and run this one-liner installer:

curl -sSL https://install.pi-hole.net | bash

Hit Enter. The script fetches Pi-hole and launches the interactive setup wizard.

Select your interface (wlan0 for Wi-Fi or eth0 for Ethernet) using arrow keys and Enter.

Google, Cloudflare, OpenDNS: Choose a DNS Provider

Pick an upstream DNS provider for resolving non-ad domains. Pi-hole offers reliable defaults:

• Google (ECS)
• OpenDNS (ECS)
• Level 3
• Comodo
• DNS.WATCH
• Quad9 (filtered, DNSSEC)
• Quad9 (unfiltered, DNSSEC)
• Quad9 (filtered + ECS)
• Cloudflare

This guide uses Google for its speed and reliability, but Cloudflare excels in privacy—choose based on your needs.

Which Blacklists Should Pi-hole Use?

Select blocklists to target ads, trackers, and malware. Stick to defaults unless you have specific tweaks in mind—they're curated for balance and effectiveness.

Internet Protocols: IPv4 or IPv6 (or Both)?

Enable both for maximum coverage, as many ads use IPv6.

Set Up a Static IP

Confirm your network details and opt for a static IP (select Yes). Review the disclaimer and proceed.

Monitor Pi-hole with the Web Admin Interface

Install the web interface for real-time stats and control—essential for ongoing management.

Also install the lighttpd web server when prompted.

Pi-hole Data Logging

Keep logging enabled for insights. For FTL privacy:

• Show all: Full details (recommended for troubleshooting).
• Hide domains: Anonymize domains.
• Hide domains and clients: Further privacy.
• Anonymous: Minimal stats.
• Disabled: No stats.

Access Your Pi-hole Dashboard

Note the web URL (usually https://pi.hole/admin or your Pi's IP) and generated password.

Key sections include:

• Query Log: Recent DNS requests.
• Whitelist: Always-allow domains.
• Blacklist: Manual ad blocks.
• Disable: Temporary off-switch.
• Update Lists: Refresh blocklists.
• Query Lists: Check domain status.
• pihole.log: Live logs.
• Settings: Customize DNS, etc.

Explore thoroughly—it's a powerhouse for network insights.

Troubleshooting: Unable to Resolve Host

If you see "Failed to resolve host" or "FTL engine not installed":

sudo nano /etc/resolv.conf

Add your DNS IP, e.g., for Google:

nameserver 8.8.8.8

Save (Ctrl+O, Enter, Ctrl+X). Rerun the installer.

Update Your Router for Network-Wide Blocking

Point your router's DNS to the Pi-hole IP (find via hostname -I).

• Access router admin (usually 192.168.1.1).
• Log in (check defaults if unknown).
• Edit DNS/DHCP settings (often under Advanced).
• Set primary DNS to Pi's IP.

Consult your router manual for specifics.

Block Ads on Specific Devices

1. Windows

• Control Panel > Network and Sharing Center > Change adapter settings.
• Right-click connection > Properties > Internet Protocol Version 4 (TCP/IPv4) > Properties.
• Use Pi-hole IP as DNS server.

2. Linux

• System Settings > Network > Edit connection > IPv4/IPv6 tab.
• Add Pi-hole IP to DNS servers > Apply.
• Or edit /etc/resolv.conf directly.

3. macOS

• System Preferences > Network > Select connection > Advanced > DNS.
• Add Pi-hole IP > OK.

4. iPhone/iPad

• Settings > Wi-Fi > Info (i) > Configure DNS > Manual > Add Pi-hole IP.

5. Android

• Settings > Wi-Fi > Long-press network > Modify > IP settings: Static.
• DNS 1: Pi-hole IP > Save.

Pi-hole can also serve as a Wi-Fi hotspot or web server—expand its utility further.