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NetAlertX
An open source network presence scanner that detects new devices and alerts you to unauthorized access on your LAN.
About NetAlertX
NetAlertX is a lightweight network monitoring tool that continuously scans your local network for new or unknown devices. It runs as a Docker container or Python script, checking for devices via ARP, ICMP, and other discovery methods. When it finds a device not in your whitelist, it fires off notifications through email, Pushover, Telegram, or other channels.
You can configure custom device groups, set scan schedules, and view a web dashboard showing all connected devices with their MAC addresses, IPs, and last seen timestamps. It integrates with Pi-hole and supports plugins for additional data like OUI lookups and device vendor identification. The project is maintained by a small team on GitHub with regular updates.
NetAlertX is ideal for home lab operators, sysadmins, or anyone wanting a simple early warning system for rogue devices on their network. It is completely free and open source under the GPL-3.0 license, with no paid tiers or feature gating.
You can configure custom device groups, set scan schedules, and view a web dashboard showing all connected devices with their MAC addresses, IPs, and last seen timestamps. It integrates with Pi-hole and supports plugins for additional data like OUI lookups and device vendor identification. The project is maintained by a small team on GitHub with regular updates.
NetAlertX is ideal for home lab operators, sysadmins, or anyone wanting a simple early warning system for rogue devices on their network. It is completely free and open source under the GPL-3.0 license, with no paid tiers or feature gating.
Security
Quick Facts
- Pricing
- Free
- License
- Open Source
- Platform
- Any Platform
- Version
- 24.12.1
- Developer
- NetAlertX Project