Packet #293809

Database ID:	293809
Mesh Packet ID:	`0x7dfb7c40` Utilizado para correlação entre gateways
Tempo:	2025-10-11 11:23:59 UTC
Do Node:	DHM/M 868 (DHM8)
Para o Node:	!bba83f90 (3f90)
Successo:	Processado
Protocolo:	NODEINFO_APP Port: 4

Gateway:	CT7ALW-CL-8 (7ALW)
Canal:	LongFast
RSSI:	-126 dBm
SNR:	-17.25 dBm
Info Hop:	1/3 hops Início: 3, Limite: 2

Long Name:	DHM/M 868
Short Name:	DHM8
Node ID:	!909635cc
MAC Address:	6AaQljXM
Hardware:	TLORA_T3_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:	74 bytes
Gateway:	!ba69c004
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	1 / 3

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`	`!ba69c004` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (74 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2425763276` Source node ID	uint32
`to`	`3148365712` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`74` bytes	size
`hop_limit`	`2` Remaining hops allowed	uint32
`hop_start`	`3` Initial hop limit	uint32
`hops_taken`	`1` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-126.0` dBm Signal strength at gateway	int32
`rx_snr`	`-17.25` dB Signal quality at gateway	float
`rx_time`	`1760178226` 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`	`144` Next hop node ID	uint32
`relay_node`	`245` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1760178239.6632235` 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 (1 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!ba69c004`
Signal Metrics:	RSSI: -126.0 dBm SNR: -17.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	74 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!909635cc", "long_name": "DHM/M 868", "short_name": "DHM8", "macaddr": "6AaQljXM", "hw_model": "TLORA_T3_S3" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!ba69c004", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2425763276, "to": 3148365712, "id": 2113633344, "rx_time": 1760178226, "rx_snr": -17.25, "rx_rssi": -126, "hop_limit": 2, "hop_start": 3, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 144, "relay_node": 245, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09213930393633356363120944484d2f4d203836381a0444484d382206e806909635cc281038014220c7c74e0a89e5467a44fd852566379db12b3086bbd352785b732914fc75d19c68", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!909635cc", "long_name": "DHM/M 868", "short_name": "DHM8", "macaddr": "6AaQljXM", "hw_model": "TLORA_T3_S3", "role": "CLIENT_MUTE", "public_key": "x8dOConlRnpE/YUlZjedsSswhrvTUnhbcykU/HXRnGg=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (74 bytes)

0a09213930393633356363120944484d2f4d203836381a0444484d382206e806909635cc281038014220c7c74e0a89e5467a44fd852566379db12b3086bbd352785b732914fc75d19c68

Hex Analysis:

Size:	74 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 #293809 Successo

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