Packet #611363

Database ID:	611363
Mesh Packet ID:	`0x367200fa` Utilizado para correlação entre gateways
Tempo:	2025-10-29 16:19:58 UTC
Do Node:	CR7BUI-CL-8 (7BUI)
Para o Node:	CR7BUW-P1-8 (BUWP)
Successo:	Processado
Protocolo:	ROUTING_APP Port: 5

Gateway:	CR7BUW-P1-8 (BUWP)
Canal:	LongFast
RSSI:	-99 dBm
SNR:	4.5 dBm
Info Hop:	1/3 hops Início: 3, Limite: 2

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:	2 bytes
Gateway:	!ba586b7c
Channel:	LongFast
Payload Type:	ROUTING_APP
Hop Count:	1 / 3

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`	`!ba586b7c` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (2 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3127537948` Source node ID	uint32
`to`	`3126356860` Target node ID	uint32
`decoded.portnum`	`5` ROUTING_APP	enum
`decoded.payload_length`	`2` bytes	size
`hop_limit`	`2` Remaining hops allowed	uint32
`hop_start`	`3` 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`	`4.50` dB Signal quality at gateway	float
`rx_time`	`1761754790` 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`	`140` Next hop node ID	uint32
`relay_node`	`188` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1761754798.925027` 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:	`!ba586b7c`
Signal Metrics:	RSSI: -99.0 dBm SNR: 4.50 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	ROUTING_APP
Size:	2 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "error_reason": "NONE", "type": "protobuf", "portnum": "ROUTING_APP", "message_class": "Routing" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!ba586b7c", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3127537948, "to": 3126356860, "id": 913441018, "rx_time": 1761754790, "rx_snr": 4.5, "rx_rssi": -99, "hop_limit": 2, "hop_start": 3, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 140, "relay_node": 188, "tx_after": 0, "decoded": { "portnum": 5, "payload": "1800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "error_reason": "NONE", "type": "protobuf", "portnum": "ROUTING_APP", "message_class": "Routing" } } } }

Raw Packet Data (2 bytes)

1800

Hex Analysis:

Size:	2 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 #611363 Successo

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