Packet #487048

Database ID:	487048
Mesh Packet ID:	`0x7cfdeec7` Utilizado para correlação entre gateways
Tempo:	2025-10-22 14:30:42 UTC
Do Node:	Vegetal PT Meteorology (🕶)
Para o Node:	Colibri (868M)
Successo:	Processado
Protocolo:	NODEINFO_APP Port: 4

Gateway:	MosEisleyCantina-GW-8🇵🇹 (SOLO)
Canal:	LongFast
RSSI:	-110 dBm
SNR:	-8.25 dBm
Info Hop:	1/3 hops Início: 3, Limite: 2

Long Name:	Vegetal PT Meteorology
Short Name:	🕶
Node ID:	!45a358c0
MAC Address:	tDpFo1jA
Hardware:	HELTEC_VISION_MASTER_T190

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:	87 bytes
Gateway:	!da585d78
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`	`!da585d78` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (87 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`1168332992` Source node ID	uint32
`to`	`3148359460` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`87` 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`	`-110.0` dBm Signal strength at gateway	int32
`rx_snr`	`-8.25` dB Signal quality at gateway	float
`rx_time`	`1761139842` 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`	`173` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1761139842.18024` 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:	`!da585d78`
Signal Metrics:	RSSI: -110.0 dBm SNR: -8.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	87 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!45a358c0", "long_name": "Vegetal PT Meteorology", "short_name": "🕶", "macaddr": "tDpFo1jA", "hw_model": "HELTEC_VISION_MASTER_T190" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!da585d78", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1168332992, "to": 3148359460, "id": 2097016519, "rx_time": 1761139842, "rx_snr": -8.25, "rx_rssi": -110, "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": 173, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a0921343561333538633012165665676574616c205054204d6574656f726f6c6f67791a04f09f95b62206b43a45a358c028424220e8a9e91922784706aa34ba70a500352b214f38181cd332973bb0ad22c9c62e6f4800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!45a358c0", "long_name": "Vegetal PT Meteorology", "short_name": "🕶", "macaddr": "tDpFo1jA", "hw_model": "HELTEC_VISION_MASTER_T190", "public_key": "6KnpGSJ4RwaqNLpwpQA1KyFPOBgc0zKXO7CtIsnGLm8=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (87 bytes)

0a0921343561333538633012165665676574616c205054204d6574656f726f6c6f67791a04f09f95b62206b43a45a358c028424220e8a9e91922784706aa34ba70a500352b214f38181cd332973bb0ad22c9c62e6f4800

Hex Analysis:

Size:	87 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 #487048 Successo

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