Packet #1188446

Database ID:	1188446
Mesh Packet ID:	`0x97bb7a49` Used for correlation across gateways
Timestamp:	2025-06-18 17:38:02 UTC
From Node:	Meshtastic 8c90 Movil (LeoM)
To Node:	!da585e1c (5e1c)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Meshtastic 1cc8 (1cc8)
Channel:	LongFast
RSSI:	-105 dBm
SNR:	1.5 dBm
Hop Info:	1/3 hops Start: 3, Limit: 2

Long Name:	Meshtastic 8c90 Movil
Short Name:	LeoM
Node ID:	!849b8c90
MAC Address:	sIGEm4yQ
Hardware:	HELTEC_V3

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:	84 bytes
Gateway:	!a0cb1cc8
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	1 / 3

Privacy Summary

Exposure Level:
Direct Message

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 1 more...

Exposure Risks:
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
+ 2 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!a0cb1cc8` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (84 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2224786576` Source node ID	uint32
`to`	`3663224348` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`84` bytes	size
`hop_limit`	`2` Remaining hops allowed	uint32
`hop_start`	`3` Initial hop limit	uint32
`hops_taken`	`1` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-105.0` dBm Signal strength at gateway	int32
`rx_snr`	`1.50` dB Signal quality at gateway	float
`rx_time`	`1750268281` 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`	`217` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1750268282.3219612` 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
✓ Gateway node ID tracked

Exposure Risks:

⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (1 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!a0cb1cc8`
Signal Metrics:	RSSI: -105.0 dBm SNR: 1.50 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	84 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!849b8c90", "long_name": "Meshtastic 8c90 Movil", "short_name": "LeoM", "macaddr": "sIGEm4yQ", "hw_model": "HELTEC_V3" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!a0cb1cc8", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2224786576, "to": 3663224348, "id": 2545646153, "rx_time": 1750268281, "rx_snr": 1.5, "rx_rssi": -105, "hop_limit": 2, "hop_start": 3, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 217, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a0921383439623863393012154d6573687461737469632038633930204d6f76696c1a044c656f4d2206b081849b8c90282b4220972b0fbe3ace9ba09dab8354608e11f9eba9d772cf119bd3e474b3f3bca15749", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!849b8c90", "long_name": "Meshtastic 8c90 Movil", "short_name": "LeoM", "macaddr": "sIGEm4yQ", "hw_model": "HELTEC_V3", "public_key": "lysPvjrOm6Cdq4NUYI4R+eup13LPEZvT5HSz87yhV0k=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (84 bytes)

0a0921383439623863393012154d6573687461737469632038633930204d6f76696c1a044c656f4d2206b081849b8c90282b4220972b0fbe3ace9ba09dab8354608e11f9eba9d772cf119bd3e474b3f3bca15749

Hex Analysis:

Size:	84 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 #1188446 Success

Packet Information

Payload Data

Decoded Data: