Packet #492445

Database ID:	492445
Mesh Packet ID:	`0x8df0b70a` Utilizado para correlação entre gateways
Tempo:	2025-10-22 21:09:58 UTC
Do Node:	GZ7d0-8 (GZ7D)
Para o Node:	!ffffffff (ffff)
Successo:	Processado
Protocolo:	ADMIN_APP Port: 6

Gateway:	GZ7d0-GW-01-8 (GZG1)
Canal:	LongFast
RSSI:	-54 dBm
SNR:	9.75 dBm
Info Hop:	0/0 hops Início: 0, Limite: 0

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:	!06f59934
Channel:	LongFast
Payload Type:	ADMIN_APP
Hop Count:	Unknown / Unknown

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked
+ 1 more...

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
+ 2 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!06f59934` 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`	`2867974952` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`6` ADMIN_APP	enum
`decoded.payload_length`	`2` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	Not set	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-54.0` dBm Signal strength at gateway	int32
`rx_snr`	`9.75` dB Signal quality at gateway	float
`rx_time`	`1761163788` 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`	`1761163798.645239` Unix timestamp	uint32

MQTT Privacy & Exposure Analysis

Analysis of privacy features and exposure risks when packet is shared via MQTT

Exposure Level: Broadcast

Privacy Features:

✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

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

MQTT-Specific Fields

Gateway ID:	`!06f59934`
Zero Hop Policy:	Enabled Direct gateway connection
Signal Metrics:	RSSI: -54.0 dBm SNR: 9.75 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	ADMIN_APP
Size:	2 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "get_channel_request": 3, "type": "protobuf", "portnum": "ADMIN_APP", "message_class": "AdminMessage" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!06f59934", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2867974952, "to": 4294967295, "id": 2381362954, "rx_time": 1761163788, "rx_snr": 9.75, "rx_rssi": -54, "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": 6, "payload": "0803", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "get_channel_request": 3, "type": "protobuf", "portnum": "ADMIN_APP", "message_class": "AdminMessage" } } } }

Raw Packet Data (2 bytes)

0803

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 #492445 Successo

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