Title: Find Devices on Your Wi-Fi Network
Description: Discover devices and services on a network you own or are authorized to test
URL: /latest/wifi/lan-discovery/
Version: latest
Section: Wi-Fi
Search index: /search-index.json

# Find Devices on Your Wi-Fi Network

> Discover devices and services on a network you own or are authorized to test

## On this page

- [Discovering devices](#discovering-devices)
- [Govee lights and Wake-on-LAN](#govee-lights-and-wake-on-lan)
- [Troubleshooting](#troubleshooting)
- [Related tasks](#related-tasks)

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LAN discovery lists devices and advertised services on the Wi-Fi network GhostESP is currently connected to. [Connect to a Wi-Fi Network](/latest/wifi/connect/) first. Only scan networks you own or have permission to test; see [Legal and ethical rules](/latest/wifi/basics/#legal-and-ethical-rules).
Discovery sequence
1
Reuse the last ARP sweep, or run a new oneCatches Windows hosts that block ICMP ping
2
Discover services per hostmDNS, LLMNR, SSDP, and NetBIOS
3
Probe specific protocolsNetBIOS, HTTP banners, SNMP, and SMB
4
List hosts and servicesHostnames, service types, ports, and IP addresses
LAN scans reuse the most recent ARP sweep as the host list.
## Discovering devices
On-device, open Menu → Wi-Fi → Network while connected and choose an item: mDNS Discovery, ARP Sweep, List Hosts (ARP), Scan Open Ports, SSH Banner Scan, NetBIOS Scan, HTTP Banner Scan, SNMP Probe, SMB Enum (enum4linux), or SNMP Walk. The … Subnet… variants target a specific subnet. Review the discovered devices and services.
From the CLI, run scanlocal to discover devices and services, or scanarp to list active devices by IP address and MAC vendor (scanarp monitor [seconds] watches for new hosts over time). Run netbiosscan [subnet <a.b.c.>] and httpbannerscan [subnet <a.b.c.>] to enumerate NetBIOS and HTTP hosts. Run snmpprobe <IP> (or snmpprobe walk <IP> [OID], snmpprobe communities <c1,c2,...|file>) to probe and walk SNMP devices, and enumscan for SMB hosts. Run mdnssniff <IP|all> to watch mDNS traffic for a host or the whole subnet (stop with mdnssniff stop). Run scanports local to port-scan the local subnet, or see [Check Open Ports](/latest/wifi/port-scanning/) for single-host scans.
LAN scans automatically reuse the most recent ARP sweep results as the host list (with MAC vendor labels) instead of ICMP-pinging every address, which catches Windows hosts that block ping. When no ARP results are available, scans use the actual subnet mask up to /20 rather than assuming /24.
GhostESP lists available hostnames, service types, ports, or IP addresses; results depend on which devices respond and the network’s isolation settings.
## Govee lights and Wake-on-LAN
- For a supported Govee light, enable LAN Control in the Govee Home app, then open Wi-Fi → Gadgets → Govee Lights → Scan Govee Devices. Select a result to turn it on or off, set brightness, or set an RGB color.
- To wake a compatible PC, open Wi-Fi → Gadgets → Wake on LAN, enter its MAC address or its live LAN IP, and submit. The PC must have Wake-on-LAN enabled and remain connected to power and the network.
## Troubleshooting
- No devices appear: Confirm GhostESP is connected to the intended network and that client isolation is not enabled.
- Only some devices appear: Retry after devices are active; not every device advertises services or responds to discovery requests.
- The connection drops: Reconnect GhostESP, then repeat the discovery scan.
## Related tasks
- [Scan nearby Wi-Fi networks](/latest/wifi/survey/)