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DNS-Level Surveillance Blocking

SentriPup
PerimeterGuard™

Live -- Running Now

Every surveillance probe, every behavioral tracker, every ad network trying to fingerprint your household -- stopped at the DNS level before it ever reaches your devices. PerimeterGuard is the first line of defense. Nothing gets through without your permission.

DNS filtering works at the network layer -- which means every device on your network is protected automatically. Your phone, your TV, your kids' tablets, your smart thermostat. One tool. Total coverage.

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SentriPup Dashboard showing PerimeterGuard blocking stats and GhostNode control panel

What It Stops

The threats that never announce themselves.

Most network threats don't look like attacks. They look like normal web traffic. PerimeterGuard knows the difference -- and blocks the ones that are quietly working against you.

🎯

Behavioral Ad Networks

The companies that track what you read, watch, and buy -- building profiles that follow you across every device and platform.

📡

Device Fingerprinting

Automated probes that identify your specific device, browser, and network configuration -- even when you're using a VPN or private mode.

🕵️

Surveillance Trackers

Third-party scripts embedded in websites that report your activity back to data brokers -- often without the site owner's full knowledge.

📺

Smart Device Telemetry

The background traffic from your smart TV, voice assistant, and IoT devices -- quietly reporting your behavior to their manufacturers' servers.

What It Does

Network-wide protection. Zero configuration per device.

PerimeterGuard operates at the DNS layer -- the internet's phone book. When a device on your network tries to reach a known surveillance domain, PerimeterGuard intercepts the request and returns nothing. The tracker never loads. The profile never builds. The data never leaves.

🛡️

Network-Wide Coverage

Every device on your network is protected automatically -- no app to install, no configuration per device. If it connects to your WiFi, PerimeterGuard is watching its DNS traffic.

⚡

Instant Blocking

DNS interception happens in milliseconds -- before the request completes, before the tracking script loads, before the behavioral data can be collected. The block is invisible to the end user.

📊

Live Block Statistics

The Dashboard shows your block count, block rate, and top blocked domains in real time. You'll see exactly how much surveillance traffic PerimeterGuard is intercepting every hour.

🗂️

Blocklist Management

Powered by curated blocklists covering known ad networks, tracking domains, and surveillance infrastructure -- updated continuously as new threats are identified.

📈

24-Hour Query History

The query activity chart shows your DNS traffic volume over the last 24 hours -- so you can see the patterns, the peaks, and exactly when your network is under the most pressure.

🔗

ThreatAtlas Integration

Every domain PerimeterGuard blocks feeds directly into SentriPup ThreatAtlas -- where it becomes a visible arc on the live global map. The block becomes something you can actually see.

How It Works

DNS interception. Before the threat loads.

PerimeterGuard sits between your network and the internet's DNS layer. Every domain lookup from every device passes through it first. Known bad domains never resolve. Everything else passes through normally.

Device Makes a Request

Any device on your network -- phone, TV, laptop, IoT sensor -- tries to reach a domain. The DNS query is intercepted before it leaves your network.

Domain Checked Against Blocklist

PerimeterGuard checks the requested domain against its curated blocklists covering ad networks, trackers, surveillance infrastructure, and known malicious domains.

Blocked or Resolved

Known bad domains return nothing -- the tracker never loads. Legitimate domains resolve normally. Your browsing experience is unaffected. The surveillance economy gets nothing.

Logged and Visualized

Every blocked domain is logged, counted, and fed to ThreatAtlas -- where it becomes a live arc on the global map. You see exactly what was stopped and where it came from.

The Numbers

What protection actually looks like.

These are real numbers from a real home network running SentriPup PerimeterGuard. Not a lab environment. Not a demo. A house, with real devices, real traffic, and real surveillance attempts happening every hour of every day.

89K+

DNS Queries per Day

Every device on the network, every request it makes -- all passing through PerimeterGuard first.

22K+

Blocked per Day

Surveillance requests, ad trackers, and behavioral profiling domains -- stopped before they reached a single device.

25%

Average Block Rate

One in four DNS requests from a normal home network is surveillance traffic. Most people have no idea.

🖥️

Managed from the SentriPup Dashboard™

PerimeterGuard doesn't have a separate interface. It's built directly into the SentriPup Dashboard -- where you can see your block stats, query history, top blocked domains, and system status all in one view. No separate app. No separate login. Everything in one place, always running in the background.