Video coming soon…
🌐 Setup NetAlertX — LAN Device Scanner & Presence Monitor
Deploy NetAlertX on Ubuntu with Docker — it continuously scans your local network and alerts you the moment a new or unknown device connects, on port 20211.
⚠️ This script is provided for demo and testing purposes only. Not intended for production use.
📦 Resources & Setup Scripts
Grab the automated bash script from GitHub to follow along with the video.
Quick Install:
wget https://raw.githubusercontent.com/mhmdali94/Docker/main/networking/netalertx/netalertx-ubuntu.sh
chmod +x netalertx-ubuntu.sh
sudo bash netalertx-ubuntu.shTutorial Steps
1 Download the Script
wget https://raw.githubusercontent.com/mhmdali94/Docker/main/networking/netalertx/netalertx-ubuntu.sh2 Make it Executable
chmod +x netalertx-ubuntu.sh3 Run the Installer
The script installs Docker if needed and starts NetAlertX in host network mode on port 20211, with configuration in ./config and the device database in ./db. Host networking is what lets it scan the LAN it's attached to.
sudo bash netalertx-ubuntu.sh4 Open the Web UI
Open your browser and navigate to NetAlertX to see discovered devices and configure scans and notifications:
http://<your-server-ip>:20211Ports Used
| Port | Purpose |
|---|---|
| 20211 | Web UI (host = container) — runs in host network mode |
| host network | Required so the scanner can see the LAN it monitors |
| ./config, ./db | Settings and the device database with full history |