Packet #357018

Database ID:	357018
Mesh Packet ID:	`0x405dbf8d` Utilizado para correlação entre gateways
Tempo:	2025-10-15 01:34:40 UTC
Do Node:	omni369 (OMNI)
Para o Node:	CadizIoT Los Cortijillos (Cort)
Successo:	Processado
Protocolo:	NODEINFO_APP Port: 4

Gateway:	KOLHF-RL-8🇵🇹 (OLHO)
Canal:	LongFast
RSSI:	-105 dBm
SNR:	-16.5 dBm
Info Hop:	4/6 hops Início: 6, Limite: 2

Long Name:	omni369
Short Name:	OMNI
Node ID:	!a0ccc938
MAC Address:	MO2gzMk4
Hardware:	HELTEC_V3

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:	74 bytes
Gateway:	!eba69543
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	4 / 6

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`	`!eba69543` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (74 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2697775416` Source node ID	uint32
`to`	`750392094` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`74` bytes	size
`hop_limit`	`2` Remaining hops allowed	uint32
`hop_start`	`6` Initial hop limit	uint32
`hops_taken`	`4` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-105.0` dBm Signal strength at gateway	int32
`rx_snr`	`-16.50` dB Signal quality at gateway	float
`rx_time`	`1760488479` 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`	`1` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1760488480.422213` 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 (4 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!eba69543`
Signal Metrics:	RSSI: -105.0 dBm SNR: -16.50 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	74 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!a0ccc938", "long_name": "omni369", "short_name": "OMNI", "macaddr": "MO2gzMk4", "hw_model": "HELTEC_V3" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!eba69543", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2697775416, "to": 750392094, "id": 1079885709, "rx_time": 1760488479, "rx_snr": -16.5, "rx_rssi": -105, "hop_limit": 2, "hop_start": 6, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 1, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a0921613063636339333812076f6d6e693336391a044f4d4e49220630eda0ccc938282b3801422027eb55dfcc82999c994cc957054f32659542b55bd3671e20c3f0b5bd5413bd544800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!a0ccc938", "long_name": "omni369", "short_name": "OMNI", "macaddr": "MO2gzMk4", "hw_model": "HELTEC_V3", "role": "CLIENT_MUTE", "public_key": "J+tV38yCmZyZTMlXBU8yZZVCtVvTZx4gw/C1vVQTvVQ=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (74 bytes)

0a0921613063636339333812076f6d6e693336391a044f4d4e49220630eda0ccc938282b3801422027eb55dfcc82999c994cc957054f32659542b55bd3671e20c3f0b5bd5413bd544800

Hex Analysis:

Size:	74 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 #357018 Successo

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