ARKNetwork Security Monitor
Zero-dependency · runs locally · nothing leaves your machine

See everything talking to your Windows machine.

ARK is a lightweight security monitor that wraps Windows' own tools and serves a single-page dashboard in your browser. Live connections, open ports, firewall rules, and registry changes — watched continuously, quarantined when needed. No Electron, no npm install, no cloud.

Windows 10 / 11PowerShell + nmap under the hood
~88 MBSingle .exe · Node bundled in
Local onlyDashboard at localhost
What ARK watches

Your machine's activity, made legible.

Six live panels, each backed by the OS's own data — with an error and a retry button instead of a blank screen when a query fails.

🌐

Network traffic

Every active connection with remote address, owning process, and reverse-DNS — flagged when a process talks to somewhere it shouldn't.

🔌

Open ports

What's listening, on which port, bound by which process. Catch the service you didn't know was exposed.

🧱

Firewall rules

Read the active Windows Firewall posture at a glance — inbound and outbound rules, enabled and blocked.

🗝️

Registry monitoring

Watches the autorun and persistence keys attackers love, and surfaces changes to them.

🧯

Quarantine

Isolate a suspicious item with a backup kept on disk — reversible, logged, and out of the way.

♻️

Built to stay up

Port fallback, a supervisor that restarts a crashed worker, per-query timeouts, and a health endpoint. It reports failures instead of vanishing.

Free download

Get ARK for Windows

Drop your email and we'll hand you the installer. No spam — occasional Legible tool updates, unsubscribe anytime.

⬇ Download ARK.exe
File: ARK.exeSize: ~88 MBThen: run INSTALL.bat
By downloading you agree it's for use on machines you own or are authorized to monitor.
Install

Running in under a minute.

01

Download & unblock

Grab ARK.exe above. Windows may warn on a new publisher — choose More info → Run anyway.

02

Install

Run INSTALL.bat. ARK installs to your user profile and adds Start Menu + Desktop shortcuts flagged run as Administrator.

03

Open the dashboard

Launch ARK — it starts a local server and opens http://localhost:8088 in your browser. That's it.