Packet #13909260

Database ID:	13909260
Mesh Packet ID:	`0xf2d4403d` Used for correlation across gateways
Timestamp:	2025-10-06 20:49:00 UTC
From Node:	Kiao 35d5 ☀️🏠 (35d5)
To Node:	Calaforra 1 🔵 (CLF1)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	NCC-1701 Kiao 📟🇪🇸 (1701)
Channel:	LongFast
RSSI:	-55 dBm
SNR:	7.5 dBm
Hop Info:	0/3 hops Start: 3, Limit: 3

Long Name:	Kiao 35d5 ☀️🏠
Short Name:	35d5
Node ID:	!182835d5
MAC Address:	3kkYKDXV
Hardware:	XIAO_NRF52_KIT

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:	87 bytes
Gateway:	!ea8eee54
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	Unknown / 3

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`	`!ea8eee54` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (87 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`405288405` Source node ID	uint32
`to`	`3569313884` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`87` bytes	size
`hop_limit`	`3` Remaining hops allowed	uint32
`hop_start`	`3` Initial hop limit	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-55.0` dBm Signal strength at gateway	int32
`rx_snr`	`7.50` dB Signal quality at gateway	float
`rx_time`	`1759783732` 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`	`213` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1759783740.0509338` 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:	`!ea8eee54`
Zero Hop Policy:	Enabled Direct gateway connection
Signal Metrics:	RSSI: -55.0 dBm SNR: 7.50 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	87 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!182835d5", "long_name": "Kiao 35d5 ☀️🏠", "short_name": "35d5", "macaddr": "3kkYKDXV", "hw_model": "XIAO_NRF52_KIT" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!ea8eee54", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 405288405, "to": 3569313884, "id": 4073996349, "rx_time": 1759783732, "rx_snr": 7.5, "rx_rssi": -55, "hop_limit": 3, "hop_start": 3, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 213, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a0921313832383335643512144b69616f203335643520e29880efb88ff09f8fa01a04333564352206de49182835d52858380c42207401757d1c233762e88cd1bf4fb5509a1904d0a2cee7904b8e6806c26b61a5374801", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!182835d5", "long_name": "Kiao 35d5 ☀️🏠", "short_name": "35d5", "macaddr": "3kkYKDXV", "hw_model": "XIAO_NRF52_KIT", "role": "CLIENT_BASE", "public_key": "dAF1fRwjN2LojNG/T7VQmhkE0KLO55BLjmgGwmthpTc=", "is_unmessagable": true, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (87 bytes)

0a0921313832383335643512144b69616f203335643520e29880efb88ff09f8fa01a04333564352206de49182835d52858380c42207401757d1c233762e88cd1bf4fb5509a1904d0a2cee7904b8e6806c26b61a5374801

Hex Analysis:

Size:	87 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 #13909260 Success

Packet Information

Payload Data

Decoded Data: