Home Network & IoT
arpwatch / arp-scan continuous
Monitors ARP activity and alerts on new MAC addresses.
Authorized testing only. Practice on systems you own, isolated labs, or targets with written permission. Unauthorized access is illegal.
When
Detecting new/rogue devices joining your home LAN over time.
How
Run on a always-on host (Pi); mail or log new station events.
Why
Passive awareness beats one-off scans for home security.
Commands & usage
sudo apt install arpwatch
sudo systemctl enable --now arpwatch
sudo tail -f /var/log/syslog | grep arpwatch
Commands are educational examples. Adapt hosts, paths, and rates to your authorized scope.
Tags
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