Packet #3163225

Database ID:	3163225
Mesh Packet ID:	`0x9f3a9106` Used for correlation across gateways
Timestamp:	2025-08-20 02:41:07 UTC
From Node:	RLKevin 002 (RL02)
To Node:	🌐 www.PD1DG.nl 🏠 (Den)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	dJoris 📡🏠🌐 StaRF (j8bc)
Channel:	LongFast
RSSI:	-119 dBm
SNR:	-17.25 dBm
Hop Info:	3/3 hops Start: 3, Limit: 0

Long Name:	RLKevin 002
Short Name:	RL02
Node ID:	!9ee71a14
MAC Address:	nBOe5xoU
Hardware:	HELTEC_V3

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:	74 bytes
Gateway:	!da64b604
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	3 / 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`	`!da64b604` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (74 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2665945620` Source node ID	uint32
`to`	`1819549108` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`74` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`3` Initial hop limit	uint32
`hops_taken`	`3` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-119.0` dBm Signal strength at gateway	int32
`rx_snr`	`-17.25` dB Signal quality at gateway	float
`rx_time`	`1755650465` 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`	`34` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1755650467.1437476` 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 (3 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!da64b604`
Signal Metrics:	RSSI: -119.0 dBm SNR: -17.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	74 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!9ee71a14", "long_name": "RLKevin 002", "short_name": "RL02", "macaddr": "nBOe5xoU", "hw_model": "HELTEC_V3" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!da64b604", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2665945620, "to": 1819549108, "id": 2671415558, "rx_time": 1755650465, "rx_snr": -17.25, "rx_rssi": -119, "hop_limit": 0, "hop_start": 3, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 34, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09213965653731613134120b524c4b6576696e203030321a04524c303222069c139ee71a14282b422035c06715bc6d202e37e1f512e362c5f7af63a139b64d016f5b35a78b7dda6919", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!9ee71a14", "long_name": "RLKevin 002", "short_name": "RL02", "macaddr": "nBOe5xoU", "hw_model": "HELTEC_V3", "public_key": "NcBnFbxtIC434fUS42LF969joTm2TQFvWzWni33aaRk=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (74 bytes)

0a09213965653731613134120b524c4b6576696e203030321a04524c303222069c139ee71a14282b422035c06715bc6d202e37e1f512e362c5f7af63a139b64d016f5b35a78b7dda6919

Hex Analysis:

Size:	74 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 #3163225 Success

Packet Information

Payload Data

Decoded Data: