Cybersecurity

Safe for your network and the PC it runs on

PassMatch is a small, closed system on your own LAN. It talks only to the devices you list, accepts nothing from the outside, and never touches the access control system's network.

On the network

  • No internet, no cloud. Nothing leaves the building. The only outgoing traffic is to your own I/O devices, plus your mail server if you turn on email.
  • Only listed devices get in. Each camera and I/O device must be in the door list by its IP address. Anything else is refused.
  • Every device signs in. Each one has its own username and password. Five wrong logins block that address for five minutes.
  • Numbers, not video. Cameras send people counts only. No images are streamed, stored or shared.
  • No link to access control. The panel is wired with dry contacts, so its network stays completely separate.

On the PC

  • Small and self-contained. One program and one web page. No third-party software packages, drivers or plug-ins to keep patched.
  • No admin rights to run. It only needs to listen on its ports and write its own log files in its own folder.
  • Never runs what it receives. Incoming messages are only read as counts; it accepts no files, scripts or remote commands.
  • Protected web page. Sign-in with viewer and admin roles; passwords stored only as salted hashes; sign-in lockout; protection against cross-site requests and framing.
  • Secrets stay put. Device and email passwords are never shown in or sent to a browser. Every admin change is checked, backed up and logged with who made it.
  • Light footprint. Under 1% of one CPU core and about 40 MB of memory, even at 100 doors.

Ports it uses (all local)

PortDirectionFrom / toPurpose
8080InI/O devices onlyBadge counts
1883InCameras onlyPeople counts
8081InGuard and admin PCsLive web page (sign-in)
80OutI/O devices and camerasAlarm pulse, health check, camera reconnect
587 / 465 / 25Out (optional)Your mail serverEmail alerts

Recommended setup

Put the cameras, I/O devices and monitor PC on a security VLAN, and allow each port only from the device addresses above (step-by-step firewall rules are in the install guide). Traffic on the LAN is not encrypted today, so keeping it on a security VLAN is the right place for it. Encrypted connections are on the roadmap.

No internet needed

Runs entirely inside the building

The camera counts people on its own processor, the I/O device counts badge pulses, and the monitor compares them on a local PC. There is no cloud service, no subscription and no outside connection. It keeps working when the internet is down.

The camera sends only numbers, never video. The monitor stores counts and events, not images.

No network link to the access control

Wired in like a door contact

The access control system connects with two dry-contact pairs per door: a spare auxiliary relay out, a spare alarm input in. There's no API, no driver, no integration license and no change to the panel's firmware or network.

That keeps the access control system's cybersecurity boundary exactly as it is, makes IT approval simple, and works with Mercury-based panels and most other panels that have a spare relay and input.

See it at one of your doors

We can install PassMatch on a single door alongside your existing access control, with no changes to how the door works, and show you the tailgates it catches.

hello@passmatch.io

Email us to book a door demo