Pi.Alert

WIFI / LAN intruder detector.

Scan the devices connected to your WIFI / LAN and alert you the connection of unknown devices. It also warns the disconnection of "always connected" devices.

Why waste money on an enterprise firewall when you can build your own from old PC parts?

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Pi.Alert Installation Guide

Initially designed to run on a Raspberry PI, probably it can run on many other Linux distributions.

Estimated time: 20'
Dependencies
Dependency Comments
Lighttpd Probably works on other webservers / not tested
arp-scan Required for Scan Method 1
Pi.hole Optional. Scan Method 2. Check devices doing DNS queries
dnsmasq Optional. Scan Method 3. Check devices using DHCP server
IEEE HW DB Necessary to identified Device vendor

If you’re still not satisfied by these tools, there are a couple of other FOSS applications worth considering. Although Pi.Alert is often hosted on Raspberry Pi boards, you can also run them inside containers on your Proxmox machine to reinforce the security of your home server. For frequent travelers who want to access their home lab from an external connection, you can deploy a Wireguard container and set up a reverse proxy via Nginx to safely access your favorite services without exposing them to security threats.

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