Solutions
Where DENIS fits
DENIS is self-hosted network visibility and security monitoring for small businesses and industrial networks. Pick the situation closest to yours: each page says what you get and what its limitations are.
By situation
- Industrial network security for mixed IT and OT sitesPlants and production sites run office IT, building systems and controllers on networks that were rarely designed together. DENIS gives plant IT, OT engineers and security staff one passive view of the devices and the industrial conversations, without sending anything to a controller.
- Passive OT network monitoring from a SPAN port or TAPWatch what happens on a control network without adding traffic to it. DENIS listens to a mirrored copy of the traffic, decodes the industrial protocols and tells you about new paths, control commands and behaviour that differs from normal.
- Network security monitoring for small and mid-size businessesKnow what is on your network, notice when something changes and contain a misbehaving device, without a security team or an enterprise platform. DENIS runs on one machine you control and explains every alert in plain words.
- Network asset discovery and an inventory that stays currentFind the devices on your network from the traffic they already send, identify what each one is, and keep an asset inventory that updates itself. Passive first, with optional, polite active discovery that you can switch off.
- DENIS for managed service providersSee and look after several customer networks from one console, with each customer kept apart. Small collectors report from every site and connect outbound only.
- NIS2 and network visibility: what DENIS can and cannot contributeThe NIS2 Directive asks essential and important entities to manage cybersecurity risk, handle incidents and report significant ones. Knowing which devices are on your network and noticing unusual activity supports several of those duties. DENIS can help with that part. It does not make an organisation compliant.
For your own network
Home labs, self-hosters and anyone learning about networks: the Community edition is free for personal, non-commercial use on up to 100 devices.