Packet #496536

Database ID:	496536
Mesh Packet ID:	`0x9713af0c` Utilizado para correlação entre gateways
Tempo:	2025-10-23 02:29:33 UTC
Do Node:	TracerRound-CL-868 (TCRD)
Para o Node:	!b03d68ec (68ec)
Successo:	Processado
Protocolo:	NODEINFO_APP Port: 4

Gateway:	CT1FHW1🇵🇹-GW-8 (FHW1)
Canal:	LongFast
RSSI:	-119 dBm
SNR:	-16.75 dBm
Info Hop:	2/4 hops Início: 4, Limite: 2

Long Name:	TracerRound-CL-868
Short Name:	TCRD
Node ID:	!715165ec
MAC Address:	4PVxUWXs
Hardware:	SEEED_WIO_TRACKER_L1

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:	83 bytes
Gateway:	!4357e998
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	2 / 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`	`!4357e998` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (83 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`1901159916` Source node ID	uint32
`to`	`2956814572` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`83` bytes	size
`hop_limit`	`2` Remaining hops allowed	uint32
`hop_start`	`4` Initial hop limit	uint32
`hops_taken`	`2` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-119.0` dBm Signal strength at gateway	int32
`rx_snr`	`-16.75` dB Signal quality at gateway	float
`rx_time`	`1761182971` 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`	`200` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1761182973.191019` 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 (2 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!4357e998`
Signal Metrics:	RSSI: -119.0 dBm SNR: -16.75 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	83 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!715165ec", "long_name": "TracerRound-CL-868", "short_name": "TCRD", "macaddr": "4PVxUWXs", "hw_model": "SEEED_WIO_TRACKER_L1" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!4357e998", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1901159916, "to": 2956814572, "id": 2534649612, "rx_time": 1761182971, "rx_snr": -16.75, "rx_rssi": -119, "hop_limit": 2, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 200, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a092137313531363565631212547261636572526f756e642d434c2d3836381a04544352442206e0f5715165ec2863422043ed3eca83451d6b6ab01d97f4bf2ff2bb03ef24f879f78db62fc999f92f2a204800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!715165ec", "long_name": "TracerRound-CL-868", "short_name": "TCRD", "macaddr": "4PVxUWXs", "hw_model": "SEEED_WIO_TRACKER_L1", "public_key": "Q+0+yoNFHWtqsB2X9L8v8rsD7yT4efeNti/JmfkvKiA=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (83 bytes)

0a092137313531363565631212547261636572526f756e642d434c2d3836381a04544352442206e0f5715165ec2863422043ed3eca83451d6b6ab01d97f4bf2ff2bb03ef24f879f78db62fc999f92f2a204800

Hex Analysis:

Size:	83 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 #496536 Successo

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