Packet #458005

Database ID:	458005
Mesh Packet ID:	`0x28296263` Utilizado para correlação entre gateways
Tempo:	2025-10-20 23:56:21 UTC
Do Node:	VALD0JP.pt-8 (VLD0)
Para o Node:	!ffffffff (ffff)
Successo:	Processado
Protocolo:	NODEINFO_APP Port: 4

Gateway:	Estefania-GW-8 (ESTF)
Canal:	LongFast
RSSI:	-111 dBm
SNR:	-16.0 dBm
Info Hop:	1/4 hops Início: 4, Limite: 3

Long Name:	VALD0JP.pt-8
Short Name:	VLD0
Node ID:	!9e077ef4
MAC Address:	8J6eB370
Hardware:	T_DECK

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:	75 bytes
Gateway:	!b03e0364
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	1 / 4

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`	`!b03e0364` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (75 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2651291380` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`75` bytes	size
`hop_limit`	`3` Remaining hops allowed	uint32
`hop_start`	`4` Initial hop limit	uint32
`hops_taken`	`1` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-111.0` dBm Signal strength at gateway	int32
`rx_snr`	`-16.00` dB Signal quality at gateway	float
`rx_time`	`1761000977` 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`	`168` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1761000981.9641304` 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 (1 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!b03e0364`
Signal Metrics:	RSSI: -111.0 dBm SNR: -16.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	75 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!9e077ef4", "long_name": "VALD0JP.pt-8", "short_name": "VLD0", "macaddr": "8J6eB370", "hw_model": "T_DECK" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!b03e0364", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2651291380, "to": 4294967295, "id": 673800803, "rx_time": 1761000977, "rx_snr": -16.0, "rx_rssi": -111, "hop_limit": 3, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 168, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09213965303737656634120c56414c44304a502e70742d381a04564c44302206f09e9e077ef428324220a5fc28362a78183eb6830c3c02b1db145f69744ceb649c5d27622e80966eea23", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!9e077ef4", "long_name": "VALD0JP.pt-8", "short_name": "VLD0", "macaddr": "8J6eB370", "hw_model": "T_DECK", "public_key": "pfwoNip4GD62gww8ArHbFF9pdEzrZJxdJ2IugJZu6iM=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (75 bytes)

0a09213965303737656634120c56414c44304a502e70742d381a04564c44302206f09e9e077ef428324220a5fc28362a78183eb6830c3c02b1db145f69744ceb649c5d27622e80966eea23

Hex Analysis:

Size:	75 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 #458005 Successo

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