Packet #457584

Database ID:	457584
Mesh Packet ID:	`0xd0565a5c` Utilizado para correlação entre gateways
Tempo:	2025-10-20 23:26:00 UTC
Do Node:	RH3XF1-CLM-868 (R1XF)
Para o Node:	!b03d68ec (68ec)
Successo:	Processado
Protocolo:	NODEINFO_APP Port: 4

Gateway:	CT1FHW1🇵🇹-GW-8 (FHW1)
Canal:	LongFast
RSSI:	-118 dBm
SNR:	-19.75 dBm
Info Hop:	3/3 hops Início: 3, Limite: 0

Long Name:	RH3XF1-CLM-868
Short Name:	R1XF
Node ID:	!433cc5e0
MAC Address:	SMpDPMXg
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:	81 bytes
Gateway:	!4357e998
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	3 / 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`	`!4357e998` 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`	`1128056288` Source node ID	uint32
`to`	`2956814572` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`81` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`3` Initial hop limit	uint32
`hops_taken`	`3` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-118.0` dBm Signal strength at gateway	int32
`rx_snr`	`-19.75` dB Signal quality at gateway	float
`rx_time`	`1760999158` 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`	`48` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1760999160.549022` 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 (3 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!4357e998`
Signal Metrics:	RSSI: -118.0 dBm SNR: -19.75 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": "!433cc5e0", "long_name": "RH3XF1-CLM-868", "short_name": "R1XF", "macaddr": "SMpDPMXg", "hw_model": "HELTEC_V3" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!4357e998", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1128056288, "to": 2956814572, "id": 3495320156, "rx_time": 1760999158, "rx_snr": -19.75, "rx_rssi": -118, "hop_limit": 0, "hop_start": 3, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 48, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09213433336363356530120e5248335846312d434c4d2d3836381a0452315846220648ca433cc5e0282b38014220f3b6a8fc384b97dbf6215ac35fa79de01065aae9b85aa1603e442c579df2d04e4800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!433cc5e0", "long_name": "RH3XF1-CLM-868", "short_name": "R1XF", "macaddr": "SMpDPMXg", "hw_model": "HELTEC_V3", "role": "CLIENT_MUTE", "public_key": "87ao/DhLl9v2IVrDX6ed4BBlqum4WqFgPkQsV53y0E4=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (81 bytes)

0a09213433336363356530120e5248335846312d434c4d2d3836381a0452315846220648ca433cc5e0282b38014220f3b6a8fc384b97dbf6215ac35fa79de01065aae9b85aa1603e442c579df2d04e4800

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 #457584 Successo

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