Packet #28309599

Database ID:	28309599
Mesh Packet ID:	`0xc8212e6b` Used for correlation across gateways
Timestamp:	2025-12-17 17:29:10 UTC
From Node:	ea5fog2 🎻 (fog2)
To Node:	SierraLaPila 868 ⛰️📡 (PILA)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Mula_LaTorre_Int (MUL2)
Channel:	MediumFast
RSSI:	-46 dBm
SNR:	10.75 dBm
Hop Info:	2/2 hops Start: 2, Limit: 0
Relay Node:	`9c` MULA Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Long Name:	ea5fog2 🎻
Short Name:	fog2
Node ID:	!0650af07
MAC Address:	0EwGUK8H
Hardware:	NRF52_PROMICRO_DIY

Raw Packet Analysis

Complete field breakdown and MQTT privacy/exposure analysis

Packet Structure

MQTT Packet Flow:
ServiceEnvelope (MQTT layer) → MeshPacket (Mesh layer) → Decoded Payload (Application data)

Total Size:	77 bytes
Gateway:	!db51d5ac
Channel:	MediumFast
Payload Type:	NODEINFO_APP
Hop Count:	2 / 2

Privacy Summary

Exposure Level:
Direct Message

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 2 more...

Exposure Risks:
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (2 hops)
+ 1 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!db51d5ac` Node ID format
`channel_id`	`MediumFast`
`packet`	`MeshPacket` (77 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`105950983` Source node ID	uint32
`to`	`113870924` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`77` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`2` Initial hop limit	uint32
`hops_taken`	`2` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-46.0` dBm Signal strength at gateway	int32
`rx_snr`	`10.75` dB Signal quality at gateway	float
`rx_time`	`1765992549` Receive timestamp	fixed32
`via_mqtt`	False Direct LoRa transmission	bool
`want_ack`	False No ACK requested	bool
`priority`	Not set	enum
`delayed`	Not set	enum
`channel`	Not set	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	Not set	uint32
`relay_node`	`156` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1765992550.7273815` Unix timestamp	uint32

MQTT Privacy & Exposure Analysis

Analysis of privacy features and exposure risks when packet is shared via MQTT

Exposure Level: Direct Message

Privacy Features:

✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
✓ Custom channel: MediumFast
✓ Gateway node ID tracked

Exposure Risks:

⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (2 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!db51d5ac`
Signal Metrics:	RSSI: -46.0 dBm SNR: 10.75 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	77 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!0650af07", "long_name": "ea5fog2 🎻", "short_name": "fog2", "macaddr": "0EwGUK8H", "hw_model": "NRF52_PROMICRO_DIY" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!db51d5ac", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 105950983, "to": 113870924, "id": 3357617771, "rx_time": 1765992549, "rx_snr": 10.75, "rx_rssi": -46, "hop_limit": 0, "hop_start": 2, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 156, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09213036353061663037120c656135666f673220f09f8ebb1a04666f67322206d04c0650af07283f42200f88fbc443c54e55e77ad613fb4832446ee909c1eae3596dfd0cbac44f2fb1724800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!0650af07", "long_name": "ea5fog2 🎻", "short_name": "fog2", "macaddr": "0EwGUK8H", "hw_model": "NRF52_PROMICRO_DIY", "public_key": "D4j7xEPFTlXnetYT+0gyRG7pCcHq41lt/Qy6xE8vsXI=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (77 bytes)

0a09213036353061663037120c656135666f673220f09f8ebb1a04666f67322206d04c0650af07283f42200f88fbc443c54e55e77ad613fb4832446ee909c1eae3596dfd0cbac44f2fb1724800

Hex Analysis:

Size:	77 bytes
Format:	Protobuf (Protocol Buffers)
Encoding:	Binary with varint and length-delimited fields

This is the raw protobuf-encoded payload as received from MQTT. The structure follows the Meshtastic protobuf schema definitions.

Packet #28309599 Success

Packet Information

Payload Data

Decoded Data: