Packet #2189357

Database ID:	2189357
Mesh Packet ID:	`0xad910073` Used for correlation across gateways
Timestamp:	2025-08-13 02:20:38 UTC
From Node:	MeshingD (MSHD)
To Node:	borbons mobile (bm)
Success:	Processed
Protocol:	POSITION_APP Port: 3

Gateway:	Destiny Long 🏠🔌🌐🛰️ (Long)
Channel:	LongFast
RSSI:	-139 dBm
SNR:	-13.75 dBm
Hop Info:	0/2 hops Start: 2, Limit: 2

Latitude:	52.704051°
Longitude:	4.757914°
Satellites:	7
Precision:	14 bits

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:	36 bytes
Gateway:	!c0c3106c
Channel:	LongFast
Payload Type:	POSITION_APP
Hop Count:	Unknown / 2

Privacy Summary

Exposure Level:
Direct Message

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 3 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`	`!c0c3106c` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (36 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`1300509563` Source node ID	uint32
`to`	`3663511784` Target node ID	uint32
`decoded.portnum`	`3` POSITION_APP	enum
`decoded.payload_length`	`36` bytes	size
`hop_limit`	`2` Remaining hops allowed	uint32
`hop_start`	`2` Initial hop limit	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-139.0` dBm Signal strength at gateway	int32
`rx_snr`	`-13.75` dB Signal quality at gateway	float
`rx_time`	`1755044437` 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`	`123` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1755044438.056658` 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
✓ Reduced position precision: ~1500.0m accuracy
✓ 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:	`!c0c3106c`
Position Precision:	14 bits (~1500.0m accuracy)
Position precision meters:	`1500.0`
Zero Hop Policy:	Enabled Direct gateway connection
Signal Metrics:	RSSI: -139.0 dBm SNR: -13.75 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	POSITION_APP
Size:	36 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "latitude": 52.7040512, "longitude": 4.7579136, "altitude": null, "sats_in_view": 7, "precision_bits": 14 }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!c0c3106c", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1300509563, "to": 3663511784, "id": 2911961203, "rx_time": 1755044437, "rx_snr": -13.75, "rx_rssi": -139, "hop_limit": 2, "hop_start": 2, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 123, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00006a1f150000d6022527da9b6828024854588b0278098001c892e902980107b8010e", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 527040512, "longitude_i": 47579136, "time": 1755044391, "location_source": "LOC_INTERNAL", "altitude_hae": 42, "PDOP": 267, "ground_speed": 9, "ground_track": 5917000, "sats_in_view": 7, "precision_bits": 14, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }

Raw Packet Data (36 bytes)

0d00006a1f150000d6022527da9b6828024854588b0278098001c892e902980107b8010e

Hex Analysis:

Size:	36 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 #2189357 Success

Packet Information

Payload Data

Decoded Data: