Packet #505091

Database ID:	505091
Mesh Packet ID:	`0xb50b5d92` Utilizado para correlação entre gateways
Tempo:	2025-10-23 13:46:36 UTC
Do Node:	CS9ABS-CL-868 (🏕)
Para o Node:	CS9ABS-3-CL-868 (📻)
Successo:	Processado
Protocolo:	POSITION_APP Port: 3

Gateway:	SaojorgeN.Madeira-GW-868 (🌐)
Canal:	LongFast
RSSI:	-107 dBm
SNR:	0.5 dBm
Info Hop:	0/0 hops Início: 0, Limite: 0

Latitude:	32.832442°
Longitude:	-16.906843°
Altitude:	279 m
Satelites:	12

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:	33 bytes
Gateway:	!43b73ec4
Channel:	LongFast
Payload Type:	POSITION_APP
Hop Count:	Unknown / Unknown

Privacy Summary

Exposure Level:
Direct Message

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 2 more...

Exposure Risks:
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
+ 1 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!43b73ec4` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (33 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2854208973` Source node ID	uint32
`to`	`202737232` Target node ID	uint32
`decoded.portnum`	`3` POSITION_APP	enum
`decoded.payload_length`	`33` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	Not set	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-107.0` dBm Signal strength at gateway	int32
`rx_snr`	`0.50` dB Signal quality at gateway	float
`rx_time`	`1761223595` 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`	Not set	uint32
`tx_after`	Not set	uint32
`timestamp`	`1761223596.590847` 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
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!43b73ec4`
Zero Hop Policy:	Enabled Direct gateway connection
Signal Metrics:	RSSI: -107.0 dBm SNR: 0.50 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	POSITION_APP
Size:	33 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "latitude": 32.8324424, "longitude": -16.9068432, "altitude": 279, "sats_in_view": 12, "precision_bits": null }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!43b73ec4", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2854208973, "to": 202737232, "id": 3037420946, "rx_time": 1761223595, "rx_snr": 0.5, "rx_rssi": -107, "hop_limit": 0, "hop_start": 0, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 0, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d48d59113157038ecf518970225a623fa6828033da623fa68780080013598010c", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 328324424, "longitude_i": -169068432, "altitude": 279, "time": 1761223590, "location_source": "LOC_EXTERNAL", "timestamp": 1761223590, "ground_speed": 0, "ground_track": 53, "sats_in_view": 12, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }

Raw Packet Data (33 bytes)

0d48d59113157038ecf518970225a623fa6828033da623fa68780080013598010c

Hex Analysis:

Size:	33 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 #505091 Successo

Informação de Pacotes

Conteúdo dados

Dados: