Packet #35191

Database ID:	35191
Mesh Packet ID:	`0x42eedbf8` Utilizado para correlação entre gateways
Tempo:	2025-09-26 17:36:19 UTC
Do Node:	Sou_Um_Imbecil-CL-8 (a808)
Para o Node:	Asseiceira-GT-8 (🌞)
Successo:	Processado
Protocolo:	NODEINFO_APP Port: 4

Gateway:	ETZ-MQTT-8 (ETZ3)
Canal:	LongFast
RSSI:	-69 dBm
SNR:	6.25 dBm
Info Hop:	1/4 hops Início: 4, Limite: 3

Long Name:	SARRAZOLA-GT-8
Short Name:	a808
Node ID:	!9ea0a808
MAC Address:	nBOeoKgI
Hardware:	HELTEC_WSL_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:	79 bytes
Gateway:	!36176461
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	1 / 4

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`	`!36176461` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (79 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2661328904` Source node ID	uint32
`to`	`354384897` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`79` bytes	size
`hop_limit`	`3` Remaining hops allowed	uint32
`hop_start`	`4` Initial hop limit	uint32
`hops_taken`	`1` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-69.0` dBm Signal strength at gateway	int32
`rx_snr`	`6.25` dB Signal quality at gateway	float
`rx_time`	`1758904577` 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`	`17` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1758904579.2258127` 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:	`!36176461`
Signal Metrics:	RSSI: -69.0 dBm SNR: 6.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	79 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!9ea0a808", "long_name": "SARRAZOLA-GT-8", "short_name": "a808", "macaddr": "nBOeoKgI", "hw_model": "HELTEC_WSL_V3" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!36176461", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2661328904, "to": 354384897, "id": 1122950136, "rx_time": 1758904577, "rx_snr": 6.25, "rx_rssi": -69, "hop_limit": 3, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 17, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09213965613061383038120e53415252415a4f4c412d47542d381a046138303822069c139ea0a808282c4220acbc232cad5ddde0ac77aab7b1d1ee47eb0d1d6905267c838500a3d811d896294800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!9ea0a808", "long_name": "SARRAZOLA-GT-8", "short_name": "a808", "macaddr": "nBOeoKgI", "hw_model": "HELTEC_WSL_V3", "public_key": "rLwjLK1d3eCsd6q3sdHuR+sNHWkFJnyDhQCj2BHYlik=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (79 bytes)

0a09213965613061383038120e53415252415a4f4c412d47542d381a046138303822069c139ea0a808282c4220acbc232cad5ddde0ac77aab7b1d1ee47eb0d1d6905267c838500a3d811d896294800

Hex Analysis:

Size:	79 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 #35191 Successo

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Conteúdo dados

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