Packet #191415

Database ID:	191415
Mesh Packet ID:	`0x34d2f653` Utilizado para correlação entre gateways
Tempo:	2025-10-05 11:42:37 UTC
Do Node:	Meshtastic be50-8 (be50)
Para o Node:	!b03d68ec (68ec)
Successo:	Processado
Protocolo:	NODEINFO_APP Port: 4

Gateway:	FMDM-CL-8 (FMDM)
Canal:	LongFast
RSSI:	-104 dBm
SNR:	-18.0 dBm
Info Hop:	3/4 hops Início: 4, Limite: 1

Long Name:	Meshtastic be50-8
Short Name:	be50
Node ID:	!da75be50
MAC Address:	2Dvadb5Q
Hardware:	SEEED_XIAO_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:	82 bytes
Gateway:	!433d8d78
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	3 / 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`	`!433d8d78` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (82 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3665149520` Source node ID	uint32
`to`	`2956814572` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`82` bytes	size
`hop_limit`	`1` Remaining hops allowed	uint32
`hop_start`	`4` Initial hop limit	uint32
`hops_taken`	`3` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-104.0` dBm Signal strength at gateway	int32
`rx_snr`	`-18.00` dB Signal quality at gateway	float
`rx_time`	`1759660956` 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`	`241` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1759660957.3380322` 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:	`!433d8d78`
Signal Metrics:	RSSI: -104.0 dBm SNR: -18.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	82 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!da75be50", "long_name": "Meshtastic be50-8", "short_name": "be50", "macaddr": "2Dvadb5Q", "hw_model": "SEEED_XIAO_S3" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!433d8d78", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3665149520, "to": 2956814572, "id": 886240851, "rx_time": 1759660956, "rx_snr": -18.0, "rx_rssi": -104, "hop_limit": 1, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 241, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a0921646137356265353012114d65736874617374696320626535302d381a04626535302206d83bda75be5028514220e3a470f2148e99415d92a7b1731fb53f6a503eb287b7f97c88d28f0918e810364800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!da75be50", "long_name": "Meshtastic be50-8", "short_name": "be50", "macaddr": "2Dvadb5Q", "hw_model": "SEEED_XIAO_S3", "public_key": "46Rw8hSOmUFdkqexcx+1P2pQPrKHt/l8iNKPCRjoEDY=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (82 bytes)

0a0921646137356265353012114d65736874617374696320626535302d381a04626535302206d83bda75be5028514220e3a470f2148e99415d92a7b1731fb53f6a503eb287b7f97c88d28f0918e810364800

Hex Analysis:

Size:	82 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 #191415 Successo

Informação de Pacotes

Conteúdo dados

Dados: