Packet #346555

Database ID:	346555
Mesh Packet ID:	`0x54aff82f` Utilizado para correlação entre gateways
Tempo:	2025-10-14 14:57:21 UTC
Do Node:	Lisbon Vault 17🇵🇹 (PT17)
Para o Node:	Docas-8 (Doc8)
Successo:	Processado
Protocolo:	NODEINFO_APP Port: 4

Gateway:	NMG-CT03-8🇵🇹 (NMG3)
Canal:	LongFast
RSSI:	-99 dBm
SNR:	-13.5 dBm
Info Hop:	1/5 hops Início: 5, Limite: 4

Long Name:	Lisbon Vault 17🇵🇹
Short Name:	PT17
Node ID:	!335c2178
MAC Address:	ZOgzXCF4
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:	88 bytes
Gateway:	!5f187919
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	1 / 5

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`	`!5f187919` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (88 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`861675896` Source node ID	uint32
`to`	`2056526162` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`88` bytes	size
`hop_limit`	`4` Remaining hops allowed	uint32
`hop_start`	`5` Initial hop limit	uint32
`hops_taken`	`1` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-99.0` dBm Signal strength at gateway	int32
`rx_snr`	`-13.50` dB Signal quality at gateway	float
`rx_time`	`1760449627` 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`	`178` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1760450241.2967114` 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:	`!5f187919`
Signal Metrics:	RSSI: -99.0 dBm SNR: -13.50 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	88 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!335c2178", "long_name": "Lisbon Vault 17🇵🇹", "short_name": "PT17", "macaddr": "ZOgzXCF4", "hw_model": "HELTEC_V3" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!5f187919", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 861675896, "to": 2056526162, "id": 1420818479, "rx_time": 1760449627, "rx_snr": -13.5, "rx_rssi": -99, "hop_limit": 4, "hop_start": 5, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 178, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a0921333335633231373812174c6973626f6e205661756c74203137f09f87b5f09f87b91a0450543137220664e8335c2178282b42203d22cb7641667a9eb2432fa9c748ce6433e55a4a955eeff87c17a39ca8ecfe094800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!335c2178", "long_name": "Lisbon Vault 17🇵🇹", "short_name": "PT17", "macaddr": "ZOgzXCF4", "hw_model": "HELTEC_V3", "public_key": "PSLLdkFmep6yQy+px0jOZDPlWkqVXu/4fBejnKjs/gk=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (88 bytes)

0a0921333335633231373812174c6973626f6e205661756c74203137f09f87b5f09f87b91a0450543137220664e8335c2178282b42203d22cb7641667a9eb2432fa9c748ce6433e55a4a955eeff87c17a39ca8ecfe094800

Hex Analysis:

Size:	88 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 #346555 Successo

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