Packet #457482

Database ID:	457482
Mesh Packet ID:	`0x41b21f72` Utilizado para correlação entre gateways
Tempo:	2025-10-20 23:19:19 UTC
Do Node:	PQM1-Meshtastic d930 (PQM1)
Para o Node:	!b03d68ec (68ec)
Successo:	Processado
Protocolo:	NODEINFO_APP Port: 4

Gateway:	SenhorDosPacotes-CL-8 (SRDP)
Canal:	LongFast
RSSI:	-127 dBm
SNR:	-20.0 dBm
Info Hop:	3/3 hops Início: 3, Limite: 0

Long Name:	PQM1-Meshtastic d930
Short Name:	PQM1
Node ID:	!b03bd930
MAC Address:	NM2wO9kw
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:	85 bytes
Gateway:	!0c139da0
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	3 / 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`	`!0c139da0` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (85 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2956712240` Source node ID	uint32
`to`	`2956814572` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`85` 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`	`-127.0` dBm Signal strength at gateway	int32
`rx_snr`	`-20.00` dB Signal quality at gateway	float
`rx_time`	`1760998759` 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`	`135` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1760998759.7115998` 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 (3 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!0c139da0`
Signal Metrics:	RSSI: -127.0 dBm SNR: -20.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	85 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!b03bd930", "long_name": "PQM1-Meshtastic d930", "short_name": "PQM1", "macaddr": "NM2wO9kw", "hw_model": "HELTEC_V3" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!0c139da0", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2956712240, "to": 2956814572, "id": 1102192498, "rx_time": 1760998759, "rx_snr": -20.0, "rx_rssi": -127, "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": 135, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09216230336264393330121450514d312d4d65736874617374696320643933301a0450514d31220634cdb03bd930282b4220559c7b57bd78a35b4d632e021cf0887606ef110a225183708480f8da9899be7a4801", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!b03bd930", "long_name": "PQM1-Meshtastic d930", "short_name": "PQM1", "macaddr": "NM2wO9kw", "hw_model": "HELTEC_V3", "public_key": "VZx7V714o1tNYy4CHPCIdgbvEQoiUYNwhID42piZvno=", "is_unmessagable": true, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (85 bytes)

0a09216230336264393330121450514d312d4d65736874617374696320643933301a0450514d31220634cdb03bd930282b4220559c7b57bd78a35b4d632e021cf0887606ef110a225183708480f8da9899be7a4801

Hex Analysis:

Size:	85 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 #457482 Successo

Informação de Pacotes

Conteúdo dados

Dados: