Packet #18371674

Database ID:	18371674
Mesh Packet ID:	`0x4d53e3e6` Used for correlation across gateways
Timestamp:	2026-06-09 21:07:02 UTC
From Node:	Meshtastic 9b53 (9b53)
To Node:	Alexander Podolsk E213 (alex)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Zoͦmͫвⷡiͥeͤ [GW8] (🧟)
Channel:	MediumFast
RSSI:	-93 dBm
SNR:	-5.0 dBm
Hop Info:	3/3 hops Start: 3, Limit: 0

Long Name:	Meshtastic 9b53
Short Name:	9b53
Node ID:	!aa859b53
MAC Address:	47iqhZtT
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:	!deadc0de
Channel:	MediumFast
Payload Type:	NODEINFO_APP
Hop Count:	3 / 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 (3 hops)
+ 1 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!deadc0de` 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`	`2860882771` Source node ID	uint32
`to`	`1323085068` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`80` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`3` Initial hop limit	uint32
`hops_taken`	`3` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-93.0` dBm Signal strength at gateway	int32
`rx_snr`	`-5.00` dB Signal quality at gateway	float
`rx_time`	`1781028421` 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`	`140` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1781028422.9198544` 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 (3 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!deadc0de`
Signal Metrics:	RSSI: -93.0 dBm SNR: -5.00 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": "!aa859b53", "long_name": "Meshtastic 9b53", "short_name": "9b53", "macaddr": "47iqhZtT", "hw_model": "HELTEC_MESH_NODE_T114" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!deadc0de", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2860882771, "to": 1323085068, "id": 1297343462, "rx_time": 1781028421, "rx_snr": -5.0, "rx_rssi": -93, "hop_limit": 0, "hop_start": 3, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 140, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09216161383539623533120f4d65736874617374696320396235331a04396235332206e3b8aa859b5328454220895f8f50c4e3d7102e35059269718eb839246dbed41a2dd5c7864be6fea6927c4800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!aa859b53", "long_name": "Meshtastic 9b53", "short_name": "9b53", "macaddr": "47iqhZtT", "hw_model": "HELTEC_MESH_NODE_T114", "public_key": "iV+PUMTj1xAuNQWSaXGOuDkkbb7UGi3Vx4ZL5v6mknw=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (80 bytes)

0a09216161383539623533120f4d65736874617374696320396235331a04396235332206e3b8aa859b5328454220895f8f50c4e3d7102e35059269718eb839246dbed41a2dd5c7864be6fea6927c4800

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 #18371674 Success

Packet Information

Payload Data

Decoded Data: