Packet #299150

Database ID:	299150
Mesh Packet ID:	`0x9dd82405` Utilizado para correlação entre gateways
Tempo:	2025-10-11 17:45:39 UTC
Do Node:	RCruz-Twatch-8 (7640)
Para o Node:	AIKK-CL-8 (AIKK)
Successo:	Processado
Protocolo:	NODEINFO_APP Port: 4

Gateway:	CT2JAY-8 (JAY1)
Canal:	LongFast
RSSI:	-98 dBm
SNR:	4.0 dBm
Info Hop:	1/4 hops Início: 4, Limite: 3

Long Name:	RCruz-Twatch-8
Short Name:	7640
Node ID:	!16f57640
MAC Address:	mKMW9XZA
Hardware:	T_WATCH_S3

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:	81 bytes
Gateway:	!b03dc200
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	1 / 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`	`!b03dc200` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (81 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`385185344` Source node ID	uint32
`to`	`3271278379` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`81` bytes	size
`hop_limit`	`3` Remaining hops allowed	uint32
`hop_start`	`4` Initial hop limit	uint32
`hops_taken`	`1` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-98.0` dBm Signal strength at gateway	int32
`rx_snr`	`4.00` dB Signal quality at gateway	float
`rx_time`	`1760201138` 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`	`225` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1760201139.50335` 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:	`!b03dc200`
Signal Metrics:	RSSI: -98.0 dBm SNR: 4.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	81 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!16f57640", "long_name": "RCruz-Twatch-8", "short_name": "7640", "macaddr": "mKMW9XZA", "hw_model": "T_WATCH_S3" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!b03dc200", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 385185344, "to": 3271278379, "id": 2648187909, "rx_time": 1760201138, "rx_snr": 4.0, "rx_rssi": -98, "hop_limit": 3, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 225, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09213136663537363430120e524372757a2d5477617463682d381a0437363430220698a316f57640283338014220621cc29a01aa069e5b7a125f7b037487e8e97f922a01ff7ffc250b15a1afb9274800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!16f57640", "long_name": "RCruz-Twatch-8", "short_name": "7640", "macaddr": "mKMW9XZA", "hw_model": "T_WATCH_S3", "role": "CLIENT_MUTE", "public_key": "YhzCmgGqBp5behJfewN0h+jpf5IqAf9//CULFaGvuSc=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (81 bytes)

0a09213136663537363430120e524372757a2d5477617463682d381a0437363430220698a316f57640283338014220621cc29a01aa069e5b7a125f7b037487e8e97f922a01ff7ffc250b15a1afb9274800

Hex Analysis:

Size:	81 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 #299150 Successo

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