Home Network & IoT
arping
ARP-level ping to check L2 reachability and duplicate IPs.
Authorized testing only. Practice on systems you own, isolated labs, or targets with written permission. Unauthorized access is illegal.
When
Diagnosing IP conflicts or devices that ignore ICMP.
How
arping a host IP on the local segment; watch for multiple MACs.
Why
Home DHCP conflicts and silent IoT devices show up here.
Commands & usage
sudo arping -I eth0 192.168.1.1
sudo arping -c 3 192.168.1.50
Commands are educational examples. Adapt hosts, paths, and rates to your authorized scope.
Tags
Related in Home Network & IoT
Zenmap
Official Nmap GUI for visual topology and profile-based scanning.
Fing
Consumer-friendly network scanner for device inventory and internet checks.
Advanced IP Scanner
Fast Windows LAN scanner with remote RDP/HTTP shortcuts for found hosts.
nbtscan
Scans for NetBIOS name information on Windows/Samba hosts.
avahi-browse / dns-sd (mDNS)
Discovers mDNS/Bonjour services (Chromecast, printers, HomeKit, NAS).
ss / netstat / lsof
Show listening ports and connections on your own machines.