Packet #2968468

Database ID:	2968468
Mesh Packet ID:	`0xd37060af` Used for correlation across gateways
Timestamp:	2025-07-06 11:01:45 UTC
From Node:	QS27 mobile 🚙 -CL-8 (QSFM)
To Node:	RadioPrepperBase-GW-868 (RPBS)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	EB3FWC-Girona📡-GW-868 (EB3F)
Channel:	LongFast
RSSI:	-105 dBm
SNR:	-17.5 dBm
Hop Info:	0/4 hops Start: 4, Limit: 4

Long Name:	QS27 mobile 🚙 -CL-8
Short Name:	QSFM
Node ID:	!3f2ab4f2
MAC Address:	5hc/KrTy
Hardware:	NRF52_PROMICRO_DIY

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:	86 bytes
Gateway:	!433adf3c
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	Unknown / 4

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`	`!433adf3c` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (86 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`1059763442` Source node ID	uint32
`to`	`4235804547` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`86` bytes	size
`hop_limit`	`4` Remaining hops allowed	uint32
`hop_start`	`4` Initial hop limit	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-105.0` dBm Signal strength at gateway	int32
`rx_snr`	`-17.50` dB Signal quality at gateway	float
`rx_time`	`1751799703` 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`	`1751799705.4734058` 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:	`!433adf3c`
Zero Hop Policy:	Enabled Direct gateway connection
Signal Metrics:	RSSI: -105.0 dBm SNR: -17.50 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	86 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!3f2ab4f2", "long_name": "QS27 mobile 🚙 -CL-8 ", "short_name": "QSFM", "macaddr": "5hc/KrTy", "hw_model": "NRF52_PROMICRO_DIY" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!433adf3c", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1059763442, "to": 4235804547, "id": 3547357359, "rx_time": 1751799703, "rx_snr": -17.5, "rx_rssi": -105, "hop_limit": 4, "hop_start": 4, "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": 4, "payload": "0a09213366326162346632121751533237206d6f62696c6520f09f9a99202d434c2d38201a045153464d2206e6173f2ab4f2283f42203bc708fcd80b7c0d59a07691727b77b497b684a2d5f2fab0bd7d750fbf253863", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!3f2ab4f2", "long_name": "QS27 mobile 🚙 -CL-8 ", "short_name": "QSFM", "macaddr": "5hc/KrTy", "hw_model": "NRF52_PROMICRO_DIY", "public_key": "O8cI/NgLfA1ZoHaRcnt3tJe2hKLV8vqwvX11D78lOGM=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (86 bytes)

0a09213366326162346632121751533237206d6f62696c6520f09f9a99202d434c2d38201a045153464d2206e6173f2ab4f2283f42203bc708fcd80b7c0d59a07691727b77b497b684a2d5f2fab0bd7d750fbf253863

Hex Analysis:

Size:	86 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.

Packet #2968468 Success

Packet Information

Payload Data

Decoded Data: