Packet #4038957

Database ID:	4038957
Mesh Packet ID:	`0x07975060` Used for correlation across gateways
Timestamp:	2025-07-18 10:12:40 UTC
From Node:	bitherder 0cfb (0cfb)
To Node:	JM T114 A 4e5c (4e5c)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	MontcadaCentro-CL-868🗼🌐 (d9e8)
Channel:	LongFast
RSSI:	-107 dBm
SNR:	-7.5 dBm
Hop Info:	2/3 hops Start: 3, Limit: 1

Long Name:	bitherder 0cfb
Short Name:	0cfb
Node ID:	!3c980cfb
MAC Address:	1Ho8mAz7
Hardware:	T_ECHO

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:	77 bytes
Gateway:	!e00cd9e8
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	2 / 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`	`!e00cd9e8` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (77 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`1016597755` Source node ID	uint32
`to`	`1386040924` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`77` bytes	size
`hop_limit`	`1` Remaining hops allowed	uint32
`hop_start`	`3` Initial hop limit	uint32
`hops_taken`	`2` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-107.0` dBm Signal strength at gateway	int32
`rx_snr`	`-7.50` dB Signal quality at gateway	float
`rx_time`	`1752833559` 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`	`228` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1752833560.083526` 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 (2 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!e00cd9e8`
Signal Metrics:	RSSI: -107.0 dBm SNR: -7.50 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	77 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!3c980cfb", "long_name": "bitherder 0cfb", "short_name": "0cfb", "macaddr": "1Ho8mAz7", "hw_model": "T_ECHO" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!e00cd9e8", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1016597755, "to": 1386040924, "id": 127357024, "rx_time": 1752833559, "rx_snr": -7.5, "rx_rssi": -107, "hop_limit": 1, "hop_start": 3, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 228, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09213363393830636662120e62697468657264657220306366621a04306366622206d47a3c980cfb28074220aa332827241d47089f90bc5f0062996a8856310aac509528769d303404cec53a", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!3c980cfb", "long_name": "bitherder 0cfb", "short_name": "0cfb", "macaddr": "1Ho8mAz7", "hw_model": "T_ECHO", "public_key": "qjMoJyQdRwifkLxfAGKZaohWMQqsUJUodp0wNATOxTo=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (77 bytes)

0a09213363393830636662120e62697468657264657220306366621a04306366622206d47a3c980cfb28074220aa332827241d47089f90bc5f0062996a8856310aac509528769d303404cec53a

Hex Analysis:

Size:	77 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 #4038957 Success

Packet Information

Payload Data

Decoded Data: