Packet #34608

Informação de Pacotes

Database ID:	34608
Mesh Packet ID:	`0xbd3732f5` Utilizado para correlação entre gateways
Tempo:	2025-09-26 16:49:28 UTC
Do Node:	OLopes (OLT_)
Para o Node:	!ffffffff (ffff)
Successo:	Processado
Protocolo:	TEXT_MESSAGE_APP Port: 1

Gateway:	Alverca-GT-8 (ALVG)
Canal:	LongFast
RSSI:	-89 dBm
SNR:	-11.75 dBm
Info Hop:	6/7 hops Início: 7, Limite: 1

Conteúdo dados

Protocol:o TEXT_MESSAGE_APP

Tamanho: 4 bytes

Decoded: Sim

Comteúdo da SMS:

Test

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:	4 bytes
Gateway:	!16cfa144
Channel:	LongFast
Payload Type:	TEXT_MESSAGE_APP
Hop Count:	6 / 7

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
+ 3 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!16cfa144` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (4 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3564066533` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`1` TEXT_MESSAGE_APP	enum
`decoded.payload_length`	`4` bytes	size
`hop_limit`	`1` Remaining hops allowed	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`6` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-89.0` dBm Signal strength at gateway	int32
`rx_snr`	`-11.75` dB Signal quality at gateway	float
`rx_time`	`1758901764` 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`	Not set	uint32
`tx_after`	Not set	uint32
`timestamp`	`1758901768.4241102` Unix timestamp	uint32

MQTT Privacy & Exposure Analysis

Analysis of privacy features and exposure risks when packet is shared via MQTT

Exposure Level: Broadcast

Privacy Features:

✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (6 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!16cfa144`
Signal Metrics:	RSSI: -89.0 dBm SNR: -11.75 dB

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!16cfa144", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3564066533, "to": 4294967295, "id": 3174511349, "rx_time": 1758901764, "rx_snr": -11.75, "rx_rssi": -89, "hop_limit": 1, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 0, "tx_after": 0, "decoded": { "portnum": 1, "payload": "54657374", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "text": "Test", "type": "text_message", "portnum": "TEXT_MESSAGE_APP" } } } }

Raw Packet Data (4 bytes)

54657374

Hex Analysis:

Size:	4 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.

All Receptions

All gateways that received this packet
Correlation: Using Mesh Packet ID

Reception Locations

Loading reception map...

Map shows gateway locations that received this packet. Hop counts are displayed if available.

Gateway	Time Offset	RSSI	SNR	Hops	Channel	Timestamp	Actions
Alverca-GT-8 (ALVG) Primary	0.000s Reference	-89.0 dBm	-11.75 dB	6	LongFast	2025-09-26 16:49:28	Current
Meshtastic beb0 (beb0)	+0.007s After	-107.0 dBm	-5.00 dB	6	LongFast	2025-09-26 16:49:28	View
CT1FHW1🇵🇹-GW-8 (FHW1)	+0.012s After	-112.0 dBm	-10.75 dB	6	LongFast	2025-09-26 16:49:28	View
GR-H1-GW-8 (GRH1)	+0.019s After	-117.0 dBm	-18.00 dB	6	LongFast	2025-09-26 16:49:28	View
NPatroni-GW-8 (aba4)	+0.105s After	-87.0 dBm	6.00 dB	6	LongFast	2025-09-26 16:49:28	View
GZ7d0-GW-01-8 (GZG1)	+0.314s After	-133.0 dBm	-19.50 dB	6	LongFast	2025-09-26 16:49:28	View
Estefania-GW-8 (ESTF)	+0.358s After	-115.0 dBm	-9.75 dB	6	LongFast	2025-09-26 16:49:28	View
CT1ERW-CL-8 (ERW)	+0.799s After	-125.0 dBm	-16.00 dB	6	LongFast	2025-09-26 16:49:29	View

8

Total Receptions

8

Unique Gateways

Pacote #34608 Successo