Packet #2585384

Database ID:	2585384
Mesh Packet ID:	`0x207ff836` Used for correlation across gateways
Timestamp:	2025-08-15 18:46:55 UTC
From Node:	Rene (7f24)
To Node:	Deckel (DCKL)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	GOC-Parkstad.nl (GOC)
Channel:	LongFast
RSSI:	-126 dBm
SNR:	-17.0 dBm
Hop Info:	7/7 hops Start: 7, Limit: 0

Long Name:	DL1JZ
Short Name:	Rene
Node ID:	!16cd7f24
MAC Address:	mKMWzX8k
Hardware:	STATION_G2

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:	72 bytes
Gateway:	!4357860c
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	7 / 7

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`	`!4357860c` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (72 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`382566180` Source node ID	uint32
`to`	`3148356236` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`72` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`7` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-126.0` dBm Signal strength at gateway	int32
`rx_snr`	`-17.00` dB Signal quality at gateway	float
`rx_time`	`1755276412` 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`	`1755276415.4530492` 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 (7 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!4357860c`
Signal Metrics:	RSSI: -126.0 dBm SNR: -17.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	72 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!16cd7f24", "long_name": "DL1JZ", "short_name": "Rene", "macaddr": "mKMWzX8k", "hw_model": "STATION_G2" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!4357860c", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 382566180, "to": 3148356236, "id": 545257526, "rx_time": 1755276412, "rx_snr": -17.0, "rx_rssi": -126, "hop_limit": 0, "hop_start": 7, "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": "0a092131366364376632341205444c314a5a1a0452656e65220698a316cd7f24281f38014220b000772a89a2b81bdafe4b331f8561cc0e7a4e056bfa67ac599e151f4d1a6f2f4800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!16cd7f24", "long_name": "DL1JZ", "short_name": "Rene", "macaddr": "mKMWzX8k", "hw_model": "STATION_G2", "role": "CLIENT_MUTE", "public_key": "sAB3KomiuBva/kszH4VhzA56TgVr+mesWZ4VH00aby8=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (72 bytes)

0a092131366364376632341205444c314a5a1a0452656e65220698a316cd7f24281f38014220b000772a89a2b81bdafe4b331f8561cc0e7a4e056bfa67ac599e151f4d1a6f2f4800

Hex Analysis:

Size:	72 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 #2585384 Success

Packet Information

Payload Data

Decoded Data: