Packet #443059

Database ID:	443059
Mesh Packet ID:	`0xc25d4bce` Utilizado para correlação entre gateways
Tempo:	2025-10-20 01:06:06 UTC
Do Node:	ALPHA_5 (Alp5)
Para o Node:	Carnide-e880-CL-8 (e880)
Successo:	Processado
Protocolo:	NODEINFO_APP Port: 4

Gateway:	Meshtastic 7794 (7794)
Canal:	LongFast
RSSI:	-29 dBm
SNR:	7.25 dBm
Info Hop:	0/7 hops Início: 7, Limite: 7

Long Name:	ALPHA_5
Short Name:	Alp5
Node ID:	!ba09326d
MAC Address:	xI66CTJt
Hardware:	WIO_WM1110

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:	72 bytes
Gateway:	!db587794
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	Unknown / 7

Privacy Summary

Exposure Level:
Direct Message

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 2 more...

Exposure Risks:
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
+ 1 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!db587794` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (72 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3121164909` Source node ID	uint32
`to`	`1854400640` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`72` bytes	size
`hop_limit`	`7` Remaining hops allowed	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-29.0` dBm Signal strength at gateway	int32
`rx_snr`	`7.25` dB Signal quality at gateway	float
`rx_time`	`1760918765` 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`	`109` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1760918766.2176325` 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
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!db587794`
Zero Hop Policy:	Enabled Direct gateway connection
Signal Metrics:	RSSI: -29.0 dBm SNR: 7.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	72 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!ba09326d", "long_name": "ALPHA_5", "short_name": "Alp5", "macaddr": "xI66CTJt", "hw_model": "WIO_WM1110" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!db587794", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3121164909, "to": 1854400640, "id": 3260894158, "rx_time": 1760918765, "rx_snr": 7.25, "rx_rssi": -29, "hop_limit": 7, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 109, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a092162613039333236641207414c5048415f351a04416c70352206c48eba09326d281542209d8e4f3881a5ac46b45ebf5587d9655e91dfc293392a95371493dfadddb3895a4800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!ba09326d", "long_name": "ALPHA_5", "short_name": "Alp5", "macaddr": "xI66CTJt", "hw_model": "WIO_WM1110", "public_key": "nY5POIGlrEa0Xr9Vh9llXpHfwpM5KpU3FJPfrd2ziVo=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (72 bytes)

0a092162613039333236641207414c5048415f351a04416c70352206c48eba09326d281542209d8e4f3881a5ac46b45ebf5587d9655e91dfc293392a95371493dfadddb3895a4800

Hex Analysis:

Size:	72 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 #443059 Successo

Informação de Pacotes

Conteúdo dados

Dados: