Packet #21407166

Database ID:	21407166
Mesh Packet ID:	`0x3f40e3fd` Used for correlation across gateways
Timestamp:	2026-09-01 01:24:29 UTC
From Node:	Meshtastic c633 (c633)
To Node:	!49b5b2f8 (b2f8)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	malinki-home (k7p9)
Channel:	MediumFast
RSSI:	-94 dBm
SNR:	-6.25 dBm
Hop Info:	2/3 hops Start: 3, Limit: 1

Long Name:	Meshtastic c633
Short Name:	c633
Node ID:	!b6a5c633
MAC Address:	1h62pcYz
Hardware:	HELTEC_MESH_NODE_T114

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:	80 bytes
Gateway:	!6983c9b8
Channel:	MediumFast
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
+ 2 more...

Exposure Risks:
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (2 hops)
+ 1 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!6983c9b8` Node ID format
`channel_id`	`MediumFast`
`packet`	`MeshPacket` (80 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3064317491` Source node ID	uint32
`to`	`1236644600` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`80` 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`	`-94.0` dBm Signal strength at gateway	int32
`rx_snr`	`-6.25` dB Signal quality at gateway	float
`rx_time`	`1788215069` 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`	`45` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1788215069.8432322` 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
✓ Custom channel: MediumFast
✓ Gateway node ID tracked

Exposure Risks:

⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (2 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!6983c9b8`
Signal Metrics:	RSSI: -94.0 dBm SNR: -6.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	80 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!b6a5c633", "long_name": "Meshtastic c633", "short_name": "c633", "macaddr": "1h62pcYz", "hw_model": "HELTEC_MESH_NODE_T114" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!6983c9b8", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3064317491, "to": 1236644600, "id": 1061217277, "rx_time": 1788215069, "rx_snr": -6.25, "rx_rssi": -94, "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": 45, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09216236613563363333120f4d65736874617374696320633633331a04633633332206d61eb6a5c63328454220241ad57c7128ea605c80669250550995a01bebf6b757210c02dd8ae71767b0754800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!b6a5c633", "long_name": "Meshtastic c633", "short_name": "c633", "macaddr": "1h62pcYz", "hw_model": "HELTEC_MESH_NODE_T114", "public_key": "JBrVfHEo6mBcgGaSUFUJlaAb6/a3VyEMAt2K5xdnsHU=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (80 bytes)

0a09216236613563363333120f4d65736874617374696320633633331a04633633332206d61eb6a5c63328454220241ad57c7128ea605c80669250550995a01bebf6b757210c02dd8ae71767b0754800

Hex Analysis:

Size:	80 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 #21407166 Success

Packet Information

Payload Data

Decoded Data: