Packet #362778

Database ID:	362778
Mesh Packet ID:	`0x44da3cf0` Utilizado para correlação entre gateways
Tempo:	2025-10-15 10:15:01 UTC
Do Node:	DeezNuts-8🚘 (MOB3)
Para o Node:	TQB01-8 (TQB1)
Successo:	Processado
Protocolo:	NODEINFO_APP Port: 4

Gateway:	ℹ️(Meshtastic.pt)-GW-868🇵🇹 (BIG4)
Canal:	LongFast
RSSI:	-81 dBm
SNR:	6.25 dBm
Info Hop:	4/4 hops Início: 4, Limite: 0

Long Name:	DeezNuts-8🚘
Short Name:	MOB3
Node ID:	!df91c486
MAC Address:	8JHfkcSG
Hardware:	T_ECHO_LITE

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:	!ba61d134
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	4 / 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`	`!ba61d134` 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`	`3750872198` Source node ID	uint32
`to`	`1643757401` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`81` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`4` Initial hop limit	uint32
`hops_taken`	`4` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-81.0` dBm Signal strength at gateway	int32
`rx_snr`	`6.25` dB Signal quality at gateway	float
`rx_time`	`1760519700` 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`	`54` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1760519701.6170344` 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:	`!ba61d134`
Signal Metrics:	RSSI: -81.0 dBm SNR: 6.25 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": "!df91c486", "long_name": "DeezNuts-8🚘", "short_name": "MOB3", "macaddr": "8JHfkcSG", "hw_model": "T_ECHO_LITE" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!ba61d134", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3750872198, "to": 1643757401, "id": 1155153136, "rx_time": 1760519700, "rx_snr": 6.25, "rx_rssi": -81, "hop_limit": 0, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 54, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09216466393163343836120e4465657a4e7574732d38f09f9a981a044d4f42332206f091df91c486286d380142204859226c0a342230effa5d17daf7724b41cdc9d58471c9c2e3df48c381f681734800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!df91c486", "long_name": "DeezNuts-8🚘", "short_name": "MOB3", "macaddr": "8JHfkcSG", "hw_model": "T_ECHO_LITE", "role": "CLIENT_MUTE", "public_key": "SFkibAo0IjDv+l0X2vdyS0HNydWEccnC499Iw4H2gXM=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (81 bytes)

0a09216466393163343836120e4465657a4e7574732d38f09f9a981a044d4f42332206f091df91c486286d380142204859226c0a342230effa5d17daf7724b41cdc9d58471c9c2e3df48c381f681734800

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 #362778 Successo

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