Packet #369008

Database ID:	369008
Mesh Packet ID:	`0xb63624ef` Utilizado para correlação entre gateways
Tempo:	2025-10-15 19:02:10 UTC
Do Node:	Pradairo.B 📡 (snv1)
Para o Node:	!ffffffff (ffff)
Successo:	Processado
Protocolo:	TELEMETRY_APP Port: 67

Gateway:	Fama17-GT-8-PT (F17)
Canal:	LongFast
RSSI:	-123 dBm
SNR:	-12.25 dBm
Info Hop:	3/3 hops Início: 3, Limite: 0

Bateria:	101%
Voltagem:	4.21 V
Ch Util.:	20.7%
Air Util.:	0.8%

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:	27 bytes
Gateway:	!13296f2c
Channel:	LongFast
Payload Type:	TELEMETRY_APP
Hop Count:	3 / 3

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
+ 3 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!13296f2c` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (27 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3676967356` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`67` TELEMETRY_APP	enum
`decoded.payload_length`	`27` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`3` Initial hop limit	uint32
`hops_taken`	`3` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-123.0` dBm Signal strength at gateway	int32
`rx_snr`	`-12.25` dB Signal quality at gateway	float
`rx_time`	`1760551329` 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`	`146` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1760551330.0832403` Unix timestamp	uint32

MQTT Privacy & Exposure Analysis

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

Exposure Level: Broadcast

Privacy Features:

✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (3 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!13296f2c`
Signal Metrics:	RSSI: -123.0 dBm SNR: -12.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	TELEMETRY_APP
Size:	27 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "time": 1760551312, "device_metrics": { "battery_level": 101, "voltage": 4.207, "channel_utilization": 20.67, "air_util_tx": 0.801, "uptime_seconds": 901 } }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!13296f2c", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3676967356, "to": 4294967295, "id": 3057001711, "rx_time": 1760551329, "rx_snr": -12.25, "rx_rssi": -123, "hop_limit": 0, "hop_start": 3, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 146, "tx_after": 0, "decoded": { "portnum": 67, "payload": "0d90e1ef681214086515be9f86401d295ca54125560e4d3f288507", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "time": 1760551312, "device_metrics": { "battery_level": 101, "voltage": 4.207, "channel_utilization": 20.67, "air_util_tx": 0.801, "uptime_seconds": 901 }, "type": "protobuf", "portnum": "TELEMETRY_APP", "message_class": "Telemetry" } } } }

Raw Packet Data (27 bytes)

0d90e1ef681214086515be9f86401d295ca54125560e4d3f288507

Hex Analysis:

Size:	27 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.

Pacote #369008 Successo

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