Packet #2831441

Database ID:	2831441
Mesh Packet ID:	`0xbd62af9e` Used for correlation across gateways
Timestamp:	2025-08-17 14:36:01 UTC
From Node:	!2ddeeb82 (eb82)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	POSITION_APP Port: 3

Gateway:	Kiep (KIEP)
Channel:	LongFast
RSSI:	-128 dBm
SNR:	-19.0 dBm
Hop Info:	-5/0 hops Start: 0, Limit: 5

Latitude:	51.367117°
Longitude:	4.548198°
Altitude:	25 m
Satellites:	8
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:	41 bytes
Gateway:	!da5ed7a4
Channel:	LongFast
Payload Type:	POSITION_APP
Hop Count:	-5 / Unknown

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked
+ 1 more...

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`	`!da5ed7a4` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (41 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`769584002` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`3` POSITION_APP	enum
`decoded.payload_length`	`41` bytes	size
`hop_limit`	`5` Remaining hops allowed	uint32
`hop_start`	Not set	uint32
`hops_taken`	`-5` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-128.0` dBm Signal strength at gateway	int32
`rx_snr`	`-19.00` dB Signal quality at gateway	float
`rx_time`	`1742548841` 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`	`1755434161.1555152` 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
✓ Reduced position precision: ~1500.0m accuracy

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:	`!da5ed7a4`
Position Precision:	14 bits (~1500.0m accuracy)
Position precision meters:	`1500.0`
Signal Metrics:	RSSI: -128.0 dBm SNR: -19.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	POSITION_APP
Size:	41 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "latitude": 51.3671168, "longitude": 4.5481984, "altitude": 25, "sats_in_view": 8, "precision_bits": 14 }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!da5ed7a4", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 769584002, "to": 4294967295, "id": 3177361310, "rx_time": 1742548841, "rx_snr": -19.0, "rx_rssi": -128, "hop_limit": 5, "hop_start": 0, "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": 3, "payload": "0d00009e1e150000b602181925a2cca16828023d7dcca168589a027802800100980108b00101b8010e", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 513671168, "longitude_i": 45481984, "altitude": 25, "time": 1755434146, "location_source": "LOC_INTERNAL", "timestamp": 1755434109, "PDOP": 282, "ground_speed": 2, "ground_track": 0, "sats_in_view": 8, "seq_number": 1, "precision_bits": 14, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }

Raw Packet Data (41 bytes)

0d00009e1e150000b602181925a2cca16828023d7dcca168589a027802800100980108b00101b8010e

Hex Analysis:

Size:	41 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 #2831441 Success

Packet Information

Payload Data

Decoded Data: