Packet #360024

Database ID:	360024
Mesh Packet ID:	`0x78e22780` Used for correlation across gateways
Timestamp:	2025-12-10 05:29:44 UTC
From Node:	gals 🛶🚲🏕🚘🛰 (gals)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	TELEMETRY_APP Port: 67

Gateway:	mna_kz4 (mna2)
Channel:	LongFast
RSSI:	-87 dBm
SNR:	5.25 dBm
Hop Info:	7/7 hops Start: 7, Limit: 0

Temperature:	23.9°C

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:	!9ea1fc74
Channel:	LongFast
Payload Type:	TELEMETRY_APP
Hop Count:	7 / 7

Privacy Summary

Exposure Level:
Broadcast

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

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
+ 3 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!9ea1fc74` 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`	`37739619` 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`	Not set	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`7` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-87.0` dBm Signal strength at gateway	int32
`rx_snr`	`5.25` dB Signal quality at gateway	float
`rx_time`	`1765330096` 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`	`117` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1765330184.4704754` 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

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (7 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!9ea1fc74`
Signal Metrics:	RSSI: -87.0 dBm SNR: 5.25 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": 1765330181, "environment_metrics": { "temperature": 23.88019, "lux": 0.0 } }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!9ea1fc74", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 37739619, "to": 4294967295, "id": 2028087168, "rx_time": 1765330096, "rx_snr": 5.25, "rx_rssi": -87, "hop_limit": 0, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 117, "tx_after": 0, "decoded": { "portnum": 67, "payload": "0d05cd38691a0a0da10abf414d00000000", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "time": 1765330181, "environment_metrics": { "temperature": 23.88019, "lux": 0.0 }, "type": "protobuf", "portnum": "TELEMETRY_APP", "message_class": "Telemetry" } } } }

Raw Packet Data (17 bytes)

0d05cd38691a0a0da10abf414d00000000

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
mna_kz4 (mna2) Primary	0.000s Reference	-87.0 dBm	5.25 dB	7	LongFast	2025-12-10 05:29:44	Current
gals🕰🏡 (sg-c)	-3.210s Before	-138.0 dBm	-11.25 dB	7	LongFast	2025-12-10 05:29:41	View
gals-2 (sg-2)	+4.303s After	-124.0 dBm	-12.50 dB	7	LongFast	2025-12-10 05:29:48	View
Quazar ☄️ (QUAZ)	+5.911s After	-93.0 dBm	5.50 dB	5	LongFast	2025-12-10 05:29:50	View

Packet #360024 Success

Packet Information

Payload Data

Decoded Data:

Environment Metrics: