Thirty-five thousand servers didn't stop my DNS queries from walking out the back door. That's roughly the size of Private Internet Access's server network — the number they lead with on their homepage — and I still caught my own DNS lookups hitting port 53 on my ISP's resolver while the app's little shield icon insisted I was covered. A packet sniffer doesn't care what the icon says. It just shows you what actually left the building, and that afternoon what left my home network was every site I'd visited, in plain text.
Quick disclosure before I get into what actually fixed this: this site runs on affiliate links, and if you sign up for a VPN through one of mine, I get a commission at no extra cost to you. I only push Private Internet Access here because I've paid for it myself and run it on my own home network for the better part of two years — not because a check showed up for saying nice things about it.
The 2023 Letter That Started All This
Back in 2023, my employer sent out one of those breach notification letters — a third-party vendor had been compromised, and a chunk of my personal information ended up in a database I never agreed to be part of. Nobody enjoys getting that letter. Mine turned into the reason I stopped treating home VPN security like something you configure once and forget, the same way most people treat a cloud storage plan they signed up for years ago and haven't looked at since. I don't have a background in privacy engineering — no certifications, no formal networking training. I just started reading more than was probably healthy and testing things on my own hardware until the results actually held up. A dozen or so subscriptions later, DNS leaks turned out to be the thing almost nobody tests for properly.
What Actually Causes a DNS Leak?
A DNS leak happens when your traffic runs through the encrypted tunnel, but the request to translate a website's name into an actual address doesn't. Windows and macOS both like to keep a preferred resolver running in the background, and if a VPN client doesn't explicitly grab that traffic and route it through the tunnel, the operating system will happily ask your ISP instead — encryption or no encryption. DNS leak protection is the setting that closes that gap. Done properly, it makes sure every lookup, not just your browser traffic, goes out through the same pipe as everything else.
The other place this tends to fall apart is IPv6. A lot of VPN clients were built around the assumption that IPv4 was the only thing worth handling, and some of them still let IPv6 traffic slip past the tunnel because dealing with it properly is more work. I won't pretend I understand every layer of why that happens — I just know that a client which quietly ignores part of your traffic isn't doing its job, and DNS leak protection worth trusting has to cover both.
The Free App That Sold My Browsing History Anyway
Before I paid for anything, I ran a free VPN app for about a month, mostly because it was already installed and my ISP bill made me feel entitled to something free. It capped me at 500 MB before throttling to a crawl, which barely covers a day of normal browsing, and I later found — buried in a privacy policy nobody actually reads — that it was selling anonymized browsing data to cover the cost of running the service for free. Free VPNs aren't charity. Somebody pays for that server time, and if it isn't you, it's whoever's buying the data on the other end.
By Week Twelve, the Testing Actually Paid Off
Twelve weeks into rotating through providers — running the same file transfers, the same leak checks, the same speed comparisons on my own home network — I had enough repeated results to trust a pattern instead of one lucky run. The moment that actually stuck with me was pulling a four-gigabyte Linux ISO through a port-forwarded connection and watching it land in under eight minutes. That's not an enormous file by today's standards, but it was fast enough that I stopped blaming the VPN for slow transfers and started looking at the rest of my setup instead. I ran the same leak check again the next morning from a coffee shop in Fremont, just to see if it held up off my own network — same clean result.
My partner Lila works in UX design and has approximately zero interest in network architecture. Her one house rule: if I can't explain what I just changed in two sentences or less, I don't get to explain it at the dinner table.
Which VPN Actually Held Up?
Private Internet Access ended up being the one I kept coming back to for the home setup — not because it's flashy (its marketing copy is famously dry) but because of what it lets you actually see. It runs on AES-256 encryption, which by now is the standard basically every serious VPN uses, so that's not really the differentiator. What mattered more was the open-source client: every platform's app can be audited, which matters to me as a developer, even though I'll admit I've only skimmed the code myself rather than done anything close to a real audit. I go deeper on that angle in a separate piece about open-source VPN apps for developers who want to see what's actually running. I also ran NordVPN through the same battery of tests, and on raw speed it's genuinely the faster option — if that's your main priority, it's hard to argue with it. But for DNS handling specifically, on my setup, PIA's resolver behavior held steadier, especially with a house full of odd devices that a single-laptop test would never catch.
Moving DNS Protection Up to the Router
Encrypted DNS at the router level was the other change that helped — I get into the actual setup separately in my piece on why a home network probably needs a VPN at the router level, so I won't repeat it here.
There's a long list of related stuff I'm deliberately not getting into in this one — how a kill switch behaves in the exact instant a connection drops, whether split-tunneling is worth the added complexity on a home network, and what a real no-logs audit actually checks for. There's also the question of when a dedicated IP is worth paying extra for, how much protocol choice matters compared to everything else, and how ISPs sometimes classify and throttle VPN traffic differently than regular traffic — plus the browser-only-proxy-versus-full-tunnel debate, and whether it's worth reconfiguring anything just to get around geographic restrictions when you're traveling. Underneath all of it sits the bigger question of how to actually think through your own threat model before buying anything at all. Each one of those deserves its own post, not a paragraph tacked onto this one.
The Verdict for Anyone Setting Up a Home Network
If all you want is to watch something from a different country, don't overthink it — nearly any paid VPN gets you there. But if you're running multiple devices, work-from-home traffic, and a pile of smart-home gear that all phone home independently, DNS leak protection stops being a nice-to-have and becomes the actual point. You can have a green shield sitting in your taskbar and still be leaking every domain you visit. The only way to know for sure is to test it yourself instead of trusting the icon.
I landed on Private Internet Access as the daily driver for my own home network because it hands me the controls instead of hiding them, and because it hasn't broken on me the way the free option did early on. If you want to see whether that same configurability fits your setup, you can check current PIA pricing here and run your own leak test before committing to anything long-term.