NetAlertX on Ubuntu 24.04 LTS

Overview

NetAlertX is an open source network presence scanner and asset discovery framework. It repeatedly sweeps the network it is attached to, builds an inventory keyed on each device's hardware address, and remembers everything it has ever seen: when a device first appeared, when it was last present, and how its presence has changed over time. When something new joins the network, or a device you rely on stops answering, it raises an alert through the channel you choose, from email and webhooks to MQTT and a range of push services.

Because it identifies devices by hardware address rather than by name or address alone, it keeps a stable picture of a network where addresses are handed out dynamically, and it enriches what it finds with vendor lookup and name resolution so the inventory reads as equipment rather than as numbers. It suits anyone who needs to know what is actually on a network rather than what is supposed to be: teams keeping an asset inventory honest, operators watching for equipment that should not be there, and anyone who wants presence history and change alerting for the devices they depend on.

Common uses

• Keeping a continuous inventory of every device on a network
• Alerting when an unknown device joins or a known device stops answering
• Presence history and change tracking for equipment you depend on

See it running

Real screenshots taken while testing this image against its deployment guide.