In short: Your home network is constantly talking to companies you never chose, through phones, TVs, consoles, and apps. You can reduce that, and set sensible limits for children, with a mix of built-in device settings, browser tools, and network-level filtering. None of these is perfect on its own, and each has limits worth knowing before you rely on it.

What is actually happening on your network

Think of the internet like a phone system. Before your device can connect to anything, it has to look up the "number" for a name, such as example.com. That lookup is called DNS, and it is a bit like asking directory enquiries. Almost everything your devices do begins with one of these lookups.

That is useful for you, because the lookups reveal what each device is trying to reach. A typical household finds:

• Websites and apps contacting advertising and tracking companies in the background, often dozens per page.
• Smart TVs contacting their manufacturer and advertising partners. Many TVs include a feature called automatic content recognition (ACR), which identifies what is on screen so the manufacturer can understand viewing habits and show targeted ads. It is usually switchable in the TV's privacy or advertising settings, but it is often on by default.
• Games consoles, smart speakers and gadgets regularly sending usage data ("telemetry") back to their makers.
• Free apps that include several third-party tracking components alongside the app itself.

Not all of this is sinister. Some of it keeps devices working or updated. But much of it exists to build a profile of your household, and most people never agreed to that in any meaningful way.

Four tools, and what each one really does

There is no single switch for "privacy". These are the main tools, and they cover different things.

• Settings on the device (TV privacy menu, phone ad settings, app permissions)

  • ✓ Turning off the most intrusive features at the source
  • You have to repeat it on every device, and updates sometimes reset options

• Browser ad blocker (an extension in your browser)

  • ✓ Blocking ads and trackers inside web pages, including many on-page ads
  • Only covers that browser on that device, and doesn't help TVs, consoles, or most apps

• Network filtering (blocking unwanted names for the whole home)

  • ✓ Covering every device, including ones that can't run a blocker
  • Can't separate ads from content when they come from the same address, and some devices work around it

• Parental control tools (screen time, app limits, content restrictions)

  • ✓ Time limits, app approvals, and age-based content settings on a child's device
  • Different on every platform, and only as good as the settings that stay switched on

Most households end up using a mix. It helps to know which job each one does.

Ad blocking: what it can and can't do

"Ad blocking" is really several different things, and mixing them up leads to disappointment.

What network-level blocking does well. Many ads and trackers are served from dedicated advertising or tracking addresses. If your network refuses to look those up, the ad never loads. This is why a network filter can quiet a lot of banner ads in apps and games, and stop many trackers on a smart TV.

What it cannot do. Some ads come from the same address as the thing you want. A video ad on YouTube, for example, is delivered from the same place as the video itself, so a network filter can't block one without breaking the other. For that you need a browser-based blocker or a paid subscription that removes ads.

What to expect. Blocking at network level usually means fewer ads and fewer trackers, not zero. Occasionally it also breaks something: a login page, a shopping basket, a streaming app. When that happens, someone has to look at what was blocked and allow it again. That is manageable, but it is a real, recurring job in a family home where everyone notices immediately when "the internet is broken".

The smart TV question

Smart TVs deserve their own section, because they are often the most talkative device in the house and the hardest to control.

• They are built partly as advertising platforms. Selling the TV is only part of the business. Viewing data and on-screen advertising are a revenue stream too.
• Their privacy settings are scattered. Options for viewing data, personalised ads, and voice features are often in different menus, with names that vary by brand, and some are switched on by default.
• Some TVs and streaming devices ignore your network settings. A few use their own built-in lookup servers rather than the ones your network provides, which means a home filter doesn't see them unless the router is set up to redirect that traffic.
• Blocking can have side effects. Cutting off a TV's connection to its manufacturer can disable app stores, recommendations, or software updates. It's worth blocking in steps and testing, not all at once.

A sensible approach: turn off the viewing-data and ad-personalisation options in the TV's own menus first, then use a network filter to cut down on what remains, and keep an eye on whether the TV still works the way you want.

Protecting children online: what works and what doesn't

Parental controls are most effective as a layered approach, combined with conversation.

• Device-level controls come first. Phones, tablets, consoles, and computers have built-in screen time, content ratings, and app approvals. They are the most precise tools for managing a child's own device.
• Network filtering adds a home-wide layer. It can block whole categories of unwanted sites for every device on your Wi-Fi, and let you apply different rules to different devices, such as stricter limits for a child's tablet than for a parent's laptop.
• Be honest about the limits. Network filtering stops working the moment a device leaves your home Wi-Fi and joins mobile data or a friend's network, unless it's set up to follow the device. Children can also change settings, use a VPN, or switch DNS options on their own phones. And a filter can only block whole sites, so it can't pick out one video or one post on a platform that is otherwise allowed.
• Visibility helps more than blocking. Being able to see which sites a device is contacting makes it easier to talk about what they are using and why, which tends to work better than silent restrictions.
• Talk about it. Children who understand why a limit exists are far more likely to respect it. Age-appropriate rules that change as they grow are usually more effective than blanket bans.

No tool replaces that conversation, and no filter catches everything.

Two ways to get network filtering

Do it yourself. Enthusiasts run open-source filtering software on a small always-on computer at home. It gives you full control and costs very little in hardware, but you become the person responsible for installing it, updating it, fixing it, and extending protection to phones when they leave the house. It's a rewarding project if you enjoy it.

Use a managed private node. NxValue Stack provisions a private filtering resolver for you. It is your own isolated server, running open-source Pi-hole and Unbound, not a shared public service. The dashboard shows live queries and blocked domains per device, so you can see what each phone, TV, or tablet is up to. It generates encrypted endpoints, so you can set it up on a phone through its Private DNS setting and it works away from home too. You can export or delete your data at any time, billing is hourly, you can cancel whenever you like, and the BASE-N plan is $4/month.

If you're curious, you can try the demo node to see what network activity looks like. Beware though that since it's a demo account,it is publicly shared and visible and meant only for checking the plans and testing and not for actual personal use.

Frequently asked questions

Will this block every ad? No. It reduces ads and trackers, particularly those from dedicated advertising addresses. Ads served from the same address as the content, such as video ads on major platforms, need a different tool.

Is it legal to monitor my children's internet use? Rules vary by country and by the child's age, so check local guidance. As a general principle, being open with children about what is filtered and why tends to work better, and builds more trust, than doing it in secret.

Can my child get around it? Often, yes, if they are determined. Switching to mobile data, using a VPN, or changing settings on their own device can all bypass home filtering. That's one reason conversation and device-level controls matter as well.

Will it slow down our internet? Usually not noticeably. A filter that's working well can even make pages load a little faster, because blocked content never downloads.

Does it stop my TV watching me? It can reduce what the TV sends to advertisers and its manufacturer, but it won't cover everything. Switch off the viewing-data and personalised-ad options in the TV's own menus as well.

Is it the same as a VPN? No. A VPN hides your traffic from your internet provider and the local network. Filtering decides which addresses your devices are allowed to look up. They do different jobs and can be used together.

Summary

• Your home network constantly contacts advertisers, trackers, and manufacturers, and most people never chose that.
• Device settings, browser blockers, network filtering, and parental control tools each cover different jobs, so most families use a mix.
• Network filtering reduces ads and trackers across every device, but it can't block ads served from the same place as the content, and some devices work around it.
• Smart TVs are among the chattiest devices in the home, and their privacy options are best handled in the TV's menus and with a network filter together.
• For children, device controls, filtering, and open conversation work better together than any single tool.
• The idea is simple. Keeping it running, updated, and effective away from home is the hard part, which is why some families choose a managed private node such as one from NxValue Stack, instead of building one.

NxValue Stack is an independent service provider and is not affiliated with Pi-hole LLC. Pi-hole is a registered trademark of Pi-hole LLC. YouTube and other product names are trademarks of their respective owners.