Packet #677164

Database ID:	677164
Mesh Packet ID:	`0x1abfb2fa` Used for correlation across gateways
Timestamp:	2026-01-11 03:20:31 UTC
From Node:	alena (alen)
To Node:	nomad (8684)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Revolucii 50 (RE50)
Channel:	LongFast
RSSI:	-103 dBm
SNR:	-20.0 dBm
Hop Info:	-3/0 hops Start: 0, Limit: 3

Long Name:	alena
Short Name:	alen
Node ID:	!6d06b710
MAC Address:	eONtBrcQ
Hardware:	DIY_V1

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:	36 bytes
Gateway:	!82c34018
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	-3 / Unknown

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`	`!82c34018` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (36 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`1829156624` Source node ID	uint32
`to`	`3679618692` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`36` bytes	size
`hop_limit`	`3` Remaining hops allowed	uint32
`hop_start`	Not set	uint32
`hops_taken`	`-3` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-103.0` dBm Signal strength at gateway	int32
`rx_snr`	`-20.00` dB Signal quality at gateway	float
`rx_time`	`1768101629` 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`	`1768101631.2517262` 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:	`!82c34018`
Signal Metrics:	RSSI: -103.0 dBm SNR: -20.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	36 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!6d06b710", "long_name": "alena", "short_name": "alen", "macaddr": "eONtBrcQ", "hw_model": "DIY_V1" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!82c34018", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1829156624, "to": 3679618692, "id": 448770810, "rx_time": 1768101629, "rx_snr": -20.0, "rx_rssi": -103, "hop_limit": 3, "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": 4, "payload": "0a092136643036623731301205616c656e611a04616c656e220678e36d06b71028273001", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!6d06b710", "long_name": "alena", "short_name": "alen", "macaddr": "eONtBrcQ", "hw_model": "DIY_V1", "is_licensed": true, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (36 bytes)

0a092136643036623731301205616c656e611a04616c656e220678e36d06b71028273001

Hex Analysis:

Size:	36 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 #677164 Success

Packet Information

Payload Data

Decoded Data: