Packet #1793690

Database ID:	1793690
Mesh Packet ID:	`0x5cbcac59` Used for correlation across gateways
Timestamp:	2025-06-25 07:08:55 UTC
From Node:	Carlos 3d56 📱 (3d56)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Meshtastic c498📡🌐 (C498)
Channel:	LongFast
RSSI:	-41 dBm
SNR:	6.0 dBm
Hop Info:	5/5 hops Start: 5, Limit: 0

Long Name:	Carlos 3d56 🗼☀️ POC
Short Name:	3d56
Node ID:	!845a3d56
MAC Address:	8uyEWj1W
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:	89 bytes
Gateway:	!7c5ac498
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	5 / 5

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`	`!7c5ac498` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (89 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2220506454` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`89` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`5` Initial hop limit	uint32
`hops_taken`	`5` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-41.0` dBm Signal strength at gateway	int32
`rx_snr`	`6.00` dB Signal quality at gateway	float
`rx_time`	`1750835333` 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`	`1750835335.9997952` 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 (5 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!7c5ac498`
Signal Metrics:	RSSI: -41.0 dBm SNR: 6.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	89 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!845a3d56", "long_name": "Carlos 3d56 🗼☀️ POC", "short_name": "3d56", "macaddr": "8uyEWj1W", "hw_model": "XIAO_NRF52_KIT" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!7c5ac498", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2220506454, "to": 4294967295, "id": 1555868761, "rx_time": 1750835333, "rx_snr": 6.0, "rx_rssi": -41, "hop_limit": 0, "hop_start": 5, "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": "0a09213834356133643536121a4361726c6f73203364353620f09f97bce29880efb88f20504f431a04336435362206f2ec845a3d56285842209197c0d85e7052d6e0c23d7ae41ddfcf297e45b899247e7908b8a6ecd2aee64b", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!845a3d56", "long_name": "Carlos 3d56 🗼☀️ POC", "short_name": "3d56", "macaddr": "8uyEWj1W", "hw_model": "XIAO_NRF52_KIT", "public_key": "kZfA2F5wUtbgwj165B3fzyl+RbiZJH55CLim7NKu5ks=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (89 bytes)

0a09213834356133643536121a4361726c6f73203364353620f09f97bce29880efb88f20504f431a04336435362206f2ec845a3d56285842209197c0d85e7052d6e0c23d7ae41ddfcf297e45b899247e7908b8a6ecd2aee64b

Hex Analysis:

Size:	89 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 #1793690 Success

Packet Information

Payload Data

Decoded Data: