Packet #5793137

Database ID:	5793137
Mesh Packet ID:	`0xac66da19` Used for correlation across gateways
Timestamp:	2025-08-05 14:51:17 UTC
From Node:	MtFigoRCL-GW-868🇵🇹 (MtFg)
To Node:	!bbbc5e3c (5e3c)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Chiclana_2d5b (2d5b)
Channel:	LongFast
RSSI:	-128 dBm
SNR:	-20.25 dBm
Hop Info:	0/4 hops Start: 4, Limit: 4

Long Name:	MtFigoRCL-GW-868🇵🇹
Short Name:	MtFg
Node ID:	!6b7ee1be
MAC Address:	x2VrfuG+
Hardware:	RAK4631

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:	!d5202d5b
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`	`!d5202d5b` 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`	`1803477438` Source node ID	uint32
`to`	`3149684284` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`87` 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`	`-128.0` dBm Signal strength at gateway	int32
`rx_snr`	`-20.25` dB Signal quality at gateway	float
`rx_time`	`1754405476` 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`	`1754405477.9879744` 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:	`!d5202d5b`
Zero Hop Policy:	Enabled Direct gateway connection
Signal Metrics:	RSSI: -128.0 dBm SNR: -20.25 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": "!6b7ee1be", "long_name": "MtFigoRCL-GW-868🇵🇹", "short_name": "MtFg", "macaddr": "x2VrfuG+", "hw_model": "RAK4631" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!d5202d5b", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1803477438, "to": 3149684284, "id": 2892421657, "rx_time": 1754405476, "rx_snr": -20.25, "rx_rssi": -128, "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": "0a0921366237656531626512184d744669676f52434c2d47572d383638f09f87b5f09f87b91a044d7446672206c7656b7ee1be28094220a25bd244d8d9d94a22959aa78611a506b4308dc3d3aeb31d54ae44b4c7341842", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!6b7ee1be", "long_name": "MtFigoRCL-GW-868🇵🇹", "short_name": "MtFg", "macaddr": "x2VrfuG+", "hw_model": "RAK4631", "public_key": "olvSRNjZ2UoilZqnhhGlBrQwjcPTrrMdVK5EtMc0GEI=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (87 bytes)

0a0921366237656531626512184d744669676f52434c2d47572d383638f09f87b5f09f87b91a044d7446672206c7656b7ee1be28094220a25bd244d8d9d94a22959aa78611a506b4308dc3d3aeb31d54ae44b4c7341842

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 #5793137 Success

Packet Information

Payload Data

Decoded Data: