Why I Run Pi-hole on My Home Network (And You Should Too)

April 13, 2026

I spent years as a Senior Network Engineer at NASA, where controlling DNS wasn’t a preference — it was a security requirement. Every device on a managed network, from workstations to infrastructure hardware, had its DNS tightly controlled and monitored. Uncontrolled DNS resolution was treated as a network hygiene failure, not an acceptable gap.

I’m now working as a Senior Network DevOps Engineer at an international organization supporting infrastructure across 10,000+ sites. The environment is different, but the discipline is the same. I apply the same rigor to the infrastructure I run at home as I do to production systems at work.

Most home networks hand DNS off entirely to whatever the ISP provides, or at best point everything at Cloudflare or Google. That works, but it means you have zero visibility into what your devices are querying, zero ability to block malicious domains before a connection is made, and you’re placing full trust in a third party for something as foundational as name resolution.

Pi-hole changes that. It’s what I run at home, and this post explains why it matters and how to get it set up properly.

What Is Pi-hole?

Pi-hole is a network-wide DNS sinkhole. It runs on your local network and acts as the DNS server for all your devices. When a device tries to look up an ad network, tracking domain, or known malware host, Pi-hole returns nothing — the request dies before it ever leaves your network.

Unlike browser extensions that block ads on a single device, Pi-hole works at the network level. That means every device benefits automatically: phones, TVs, game consoles, smart home devices — anything that uses DNS.

Why Does This Matter?

Ads and tracking are the obvious win, but that’s just the start.

Most malware, ransomware, and spyware rely on DNS to communicate with attacker-controlled servers (called command-and-control, or C2). By routing all DNS through a resolver you control, you gain:

  • Visibility — a query log of every domain every device on your network has tried to reach
  • Blocking — malware and phishing domains stopped before a connection is made
  • Hardcoded DNS bypass prevention — when combined with a firewall rule that redirects all outbound port 53 traffic to Pi-hole, even devices that ignore your DHCP DNS setting get filtered
  • Privacy — with Unbound added alongside Pi-hole, DNS queries go directly to root servers instead of Cloudflare or Google

This is especially important for network devices like routers, switches, and IoT hardware. Many of these hardcode public DNS servers in their firmware, meaning they bypass whatever DNS you configure via DHCP. Pi-hole plus a firewall DNS intercept rule closes that gap entirely.

How It Works

Your Device
    │
    ▼  DNS query: "what's the IP for ads.example.com?"
Pi-hole
    │
    ├─ Blocked domain? → Return NXDOMAIN (nothing) ──► Request dies here
    │
    └─ Legitimate domain? → Forward upstream
           │
           ├─ Option A: Cloudflare / Google (simple, less private)
           │
           └─ Option B: Unbound (recursive resolver, queries root servers directly)
                   │
                   ▼
             Authoritative DNS → IP returned → Pi-hole → Your Device

Pi-hole maintains a gravity database — a compiled list of millions of known ad, tracking, and malicious domains. You can add additional blocklists and it updates automatically on a schedule.

What You’ll Need

  • A Linux server or mini PC on your network (a Raspberry Pi, an old NUC, a VM, a VPS — anything that stays on)
  • About 15–30 minutes for initial setup

The setup guide uses Podman (a daemonless, rootless-capable container runtime) and systemd quadlets to manage Pi-hole as a system service. This approach is more maintainable than bare docker run commands and integrates cleanly with the rest of your Linux system.

Get Started

Ready to set it up? The full installation guide covers:

  • The quadlet files with every option explained
  • Firewall configuration (including a known gotcha with masquerade rules and container restarts)
  • Automated weekly blocklist updates with logging
  • Adding Unbound for full DNS privacy
  • Troubleshooting common issues

Pi-hole with Podman Quadlets — Full Setup Guide →

Further Reading