Packet #737033

Database ID:	737033
Mesh Packet ID:	`0x92566995` Utilizado para correlação entre gateways
Tempo:	2025-11-04 20:50:06 UTC
Do Node:	Meshtastic affc (affc)
Para o Node:	!b03d68ec (68ec)
Successo:	Processado
Protocolo:	NODEINFO_APP Port: 4

Gateway:	HEX-CLM-8🇵🇹 (HEX)
Canal:	LongFast
RSSI:	-75 dBm
SNR:	6.5 dBm
Info Hop:	3/4 hops Início: 4, Limite: 1

Long Name:	Meshtastic affc
Short Name:	affc
Node ID:	!5db7affc
MAC Address:	1jldt6/8
Hardware:	TRACKER_T1000_E

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:	80 bytes
Gateway:	!e71e06bd
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	3 / 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`	`!e71e06bd` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (80 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`1572319228` Source node ID	uint32
`to`	`2956814572` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`80` bytes	size
`hop_limit`	`1` Remaining hops allowed	uint32
`hop_start`	`4` Initial hop limit	uint32
`hops_taken`	`3` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-75.0` dBm Signal strength at gateway	int32
`rx_snr`	`6.50` dB Signal quality at gateway	float
`rx_time`	`1762289408` 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`	`148` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1762289406.3461635` 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:	`!e71e06bd`
Signal Metrics:	RSSI: -75.0 dBm SNR: 6.50 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	80 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!5db7affc", "long_name": "Meshtastic affc", "short_name": "affc", "macaddr": "1jldt6/8", "hw_model": "TRACKER_T1000_E" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!e71e06bd", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1572319228, "to": 2956814572, "id": 2455136661, "rx_time": 1762289408, "rx_snr": 6.5, "rx_rssi": -75, "hop_limit": 1, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 148, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09213564623761666663120f4d65736874617374696320616666631a04616666632206d6395db7affc28474220b30b87c18a46073de851e51bf02e13f5b90109883510bc4c6e27e2575699e34d4800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!5db7affc", "long_name": "Meshtastic affc", "short_name": "affc", "macaddr": "1jldt6/8", "hw_model": "TRACKER_T1000_E", "public_key": "swuHwYpGBz3oUeUb8C4T9bkBCYg1ELxMbifiV1aZ400=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (80 bytes)

0a09213564623761666663120f4d65736874617374696320616666631a04616666632206d6395db7affc28474220b30b87c18a46073de851e51bf02e13f5b90109883510bc4c6e27e2575699e34d4800

Hex Analysis:

Size:	80 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 #737033 Successo

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