Packet #1334749

Database ID:	1334749
Mesh Packet ID:	`0x4e530a54` Used for correlation across gateways
Timestamp:	2025-06-20 15:08:44 UTC
From Node:	heliadrill0 (g1s0)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	TELEMETRY_APP Port: 67

Gateway:	g0main-CL-8 (g0mq)
Channel:	LongFast
RSSI:	-26 dBm
SNR:	5.5 dBm
Hop Info:	0/5 hops Start: 5, Limit: 5

Temperature:	41.2°C
Pressure:	1017.2 hPa

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:	17 bytes
Gateway:	!e00ce4e0
Channel:	LongFast
Payload Type:	TELEMETRY_APP
Hop Count:	Unknown / 5

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked
+ 1 more...

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
+ 2 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!e00ce4e0` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (17 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2123671648` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`67` TELEMETRY_APP	enum
`decoded.payload_length`	`17` bytes	size
`hop_limit`	`5` Remaining hops allowed	uint32
`hop_start`	`5` Initial hop limit	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-26.0` dBm Signal strength at gateway	int32
`rx_snr`	`5.50` dB Signal quality at gateway	float
`rx_time`	`1750432124` 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`	`96` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1750432124.693745` Unix timestamp	uint32

MQTT Privacy & Exposure Analysis

Analysis of privacy features and exposure risks when packet is shared via MQTT

Exposure Level: Broadcast

Privacy Features:

✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!e00ce4e0`
Zero Hop Policy:	Enabled Direct gateway connection
Signal Metrics:	RSSI: -26.0 dBm SNR: 5.50 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	TELEMETRY_APP
Size:	17 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "time": 1750432122, "environment_metrics": { "temperature": 41.16, "barometric_pressure": 1017.19385 } }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!e00ce4e0", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2123671648, "to": 4294967295, "id": 1314064980, "rx_time": 1750432124, "rx_snr": 5.5, "rx_rssi": -26, "hop_limit": 5, "hop_start": 5, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 96, "tx_after": 0, "decoded": { "portnum": 67, "payload": "0d7a7955681a0a0dd7a324421d684c7e44", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "time": 1750432122, "environment_metrics": { "temperature": 41.16, "barometric_pressure": 1017.19385 }, "type": "protobuf", "portnum": "TELEMETRY_APP", "message_class": "Telemetry" } } } }

Raw Packet Data (17 bytes)

0d7a7955681a0a0dd7a324421d684c7e44

Hex Analysis:

Size:	17 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.

Gateway	Time Offset	RSSI	SNR	Hops	Channel	Timestamp	Actions
g0main-CL-8 (g0mq) Primary	0.000s Reference	-26.0 dBm	5.50 dB	0	LongFast	2025-06-20 15:08:44	Current
NeoGenesis (NGns)	+0.453s After	-128.0 dBm	-17.00 dB	0	LongFast	2025-06-20 15:08:45	View

Packet #1334749 Success

Packet Information

Payload Data

Decoded Data:

Environment Metrics: