Packet #265272

Database ID:	265272
Mesh Packet ID:	`0x73edbc92` Utilizado para correlação entre gateways
Tempo:	2025-10-09 19:14:59 UTC
Do Node:	SDN Tracker 2 (SDT2)
Para o Node:	!7c5a35ec (35ec)
Successo:	Processado
Protocolo:	NODEINFO_APP Port: 4

Gateway:	Blue-CL-8🚶‍➡️🇵🇹🇬🇧 (BLUE)
Canal:	LongFast
RSSI:	-111 dBm
SNR:	-17.5 dBm
Info Hop:	4/7 hops Início: 7, Limite: 3

Long Name:	SDN Tracker 2
Short Name:	SDT2
Node ID:	!4df68ced
MAC Address:	4RpN9ozt
Hardware:	TRACKER_T1000_E

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:	80 bytes
Gateway:	!b78f9a73
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	4 / 7

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`	`!b78f9a73` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (80 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`1308003565` Source node ID	uint32
`to`	`2086286828` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`80` bytes	size
`hop_limit`	`3` Remaining hops allowed	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`4` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-111.0` dBm Signal strength at gateway	int32
`rx_snr`	`-17.50` dB Signal quality at gateway	float
`rx_time`	`1760033701` 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`	`52` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1760033699.1569974` 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:	`!b78f9a73`
Signal Metrics:	RSSI: -111.0 dBm SNR: -17.50 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	80 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!4df68ced", "long_name": "SDN Tracker 2", "short_name": "SDT2", "macaddr": "4RpN9ozt", "hw_model": "TRACKER_T1000_E" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!b78f9a73", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1308003565, "to": 2086286828, "id": 1944960146, "rx_time": 1760033701, "rx_snr": -17.5, "rx_rssi": -111, "hop_limit": 3, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 52, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09213464663638636564120d53444e20547261636b657220321a04534454322206e11a4df68ced2847380c4220d1dc752cb242ec39f1d218824e6fa9279d66ab64fabef5f88207b1ac3805483c4800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!4df68ced", "long_name": "SDN Tracker 2", "short_name": "SDT2", "macaddr": "4RpN9ozt", "hw_model": "TRACKER_T1000_E", "role": "CLIENT_BASE", "public_key": "0dx1LLJC7Dnx0hiCTm+pJ51mq2T6vvX4ggexrDgFSDw=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (80 bytes)

0a09213464663638636564120d53444e20547261636b657220321a04534454322206e11a4df68ced2847380c4220d1dc752cb242ec39f1d218824e6fa9279d66ab64fabef5f88207b1ac3805483c4800

Hex Analysis:

Size:	80 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 #265272 Successo

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