Packet #3029419

Database ID:	3029419
Mesh Packet ID:	`0x3de7add6` Used for correlation across gateways
Timestamp:	2026-03-20 11:30:01 UTC
From Node:	FAB101-8 (F101)
To Node:	Quintadaigreja_4710-741-8 (QI43)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	BlackPearl-🏴‍☠️-CL-8 (BPRL)
Channel:	LongFast
RSSI:	-112 dBm
SNR:	-16.75 dBm
Hop Info:	2/3 hops Start: 3, Limit: 1

Long Name:	FAB101-8
Short Name:	F101
Node ID:	!18c72b7d
MAC Address:	39kYxyt9
Hardware:	SEEED_WIO_TRACKER_L1

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:	73 bytes
Gateway:	!d4a88b9c
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`	`!d4a88b9c` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (73 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`415705981` Source node ID	uint32
`to`	`1128178016` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`73` 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`	`-112.0` dBm Signal strength at gateway	int32
`rx_snr`	`-16.75` dB Signal quality at gateway	float
`rx_time`	`1774006200` 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`	`56` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1774006201.17939` 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:	`!d4a88b9c`
Signal Metrics:	RSSI: -112.0 dBm SNR: -16.75 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	73 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!18c72b7d", "long_name": "FAB101-8", "short_name": "F101", "macaddr": "39kYxyt9", "hw_model": "SEEED_WIO_TRACKER_L1" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!d4a88b9c", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 415705981, "to": 1128178016, "id": 1038593494, "rx_time": 1774006200, "rx_snr": -16.75, "rx_rssi": -112, "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": 56, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a0921313863373262376412084641423130312d381a04463130312206dfd918c72b7d2863422082432cdc2b65f865c07889dea0320621f2ec9b7950e4e0208312f720f2a0d8194800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!18c72b7d", "long_name": "FAB101-8", "short_name": "F101", "macaddr": "39kYxyt9", "hw_model": "SEEED_WIO_TRACKER_L1", "public_key": "gkMs3Ctl+GXAeIneoDIGIfLsm3lQ5OAggxL3IPKg2Bk=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (73 bytes)

0a0921313863373262376412084641423130312d381a04463130312206dfd918c72b7d2863422082432cdc2b65f865c07889dea0320621f2ec9b7950e4e0208312f720f2a0d8194800

Hex Analysis:

Size:	73 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 #3029419 Success

Packet Information

Payload Data

Decoded Data: