Packet #3857272

Database ID:	3857272
Mesh Packet ID:	`0xa3b1910d` Used for correlation across gateways
Timestamp:	2025-07-16 05:56:59 UTC
From Node:	Jonsaes_SAB-GWA-868 (Jnss)
To Node:	Jaleon14 (274c)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Rubí - FCS (FCS)
Channel:	LongFast
RSSI:	-126 dBm
SNR:	-18.75 dBm
Hop Info:	1/3 hops Start: 3, Limit: 2

Long Name:	Jonsaes_SAB-GWA-868
Short Name:	Jnss
Node ID:	!bfdaaa58
MAC Address:	2oe/2qpY
Hardware:	NRF52_PROMICRO_DIY

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:	82 bytes
Gateway:	!db2f1578
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	1 / 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`	`!db2f1578` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (82 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3218778712` Source node ID	uint32
`to`	`3677038412` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`82` bytes	size
`hop_limit`	`2` Remaining hops allowed	uint32
`hop_start`	`3` Initial hop limit	uint32
`hops_taken`	`1` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-126.0` dBm Signal strength at gateway	int32
`rx_snr`	`-18.75` dB Signal quality at gateway	float
`rx_time`	`1752645417` 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`	`76` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1752645419.1108825` 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 (1 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!db2f1578`
Signal Metrics:	RSSI: -126.0 dBm SNR: -18.75 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	82 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!bfdaaa58", "long_name": "Jonsaes_SAB-GWA-868", "short_name": "Jnss", "macaddr": "2oe/2qpY", "hw_model": "NRF52_PROMICRO_DIY" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!db2f1578", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3218778712, "to": 3677038412, "id": 2746323213, "rx_time": 1752645417, "rx_snr": -18.75, "rx_rssi": -126, "hop_limit": 2, "hop_start": 3, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 76, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a0921626664616161353812134a6f6e736165735f5341422d4757412d3836381a044a6e73732206da87bfdaaa58283f422061600ffdea6f60811ea537e8ecdf30aa719b5f8430afa7afb125647777b28344", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!bfdaaa58", "long_name": "Jonsaes_SAB-GWA-868", "short_name": "Jnss", "macaddr": "2oe/2qpY", "hw_model": "NRF52_PROMICRO_DIY", "public_key": "YWAP/epvYIEepTfo7N8wqnGbX4Qwr6evsSVkd3eyg0Q=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (82 bytes)

0a0921626664616161353812134a6f6e736165735f5341422d4757412d3836381a044a6e73732206da87bfdaaa58283f422061600ffdea6f60811ea537e8ecdf30aa719b5f8430afa7afb125647777b28344

Hex Analysis:

Size:	82 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 #3857272 Success

Packet Information

Payload Data

Decoded Data: