Packet #30123835

Database ID:	30123835
Mesh Packet ID:	`0x9bfa955b` Used for correlation across gateways
Timestamp:	2025-12-25 17:21:13 UTC
From Node:	eMariete RAK f2b3 (eMa3)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Dexter T1 (DexT)
Channel:	MediumFast
RSSI:	-93 dBm
SNR:	-12.0 dBm
Hop Info:	1/5 hops Start: 5, Limit: 4
Relay Node:	`21` Last byte of the last hop that relayed this packet

Long Name:	eMariete RAK f2b3
Short Name:	eMa3
Node ID:	!b142f2b3
MAC Address:	/02xQvKz
Hardware:	RAK4631

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:	82 bytes
Gateway:	!6985db5c
Channel:	MediumFast
Payload Type:	NODEINFO_APP
Hop Count:	1 / 5

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: MediumFast
+ 1 more...

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
+ 2 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!6985db5c` Node ID format
`channel_id`	`MediumFast`
`packet`	`MeshPacket` (82 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2973954739` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`82` bytes	size
`hop_limit`	`4` Remaining hops allowed	uint32
`hop_start`	`5` Initial hop limit	uint32
`hops_taken`	`1` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-93.0` dBm Signal strength at gateway	int32
`rx_snr`	`-12.00` dB Signal quality at gateway	float
`rx_time`	`1766682151` 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`	`33` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1766683273.8995852` 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)
✓ Custom channel: MediumFast
✓ Gateway node ID tracked

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (1 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!6985db5c`
Signal Metrics:	RSSI: -93.0 dBm SNR: -12.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	82 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!b142f2b3", "long_name": "eMariete RAK f2b3", "short_name": "eMa3", "macaddr": "/02xQvKz", "hw_model": "RAK4631" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!6985db5c", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2973954739, "to": 4294967295, "id": 2616890715, "rx_time": 1766682151, "rx_snr": -12.0, "rx_rssi": -93, "hop_limit": 4, "hop_start": 5, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 33, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a092162313432663262331211654d6172696574652052414b20663262331a04654d61332206ff4db142f2b3280942204232f063b87375812be5fb81fff3c60e6ab52ed78866ed506594238e507224284800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!b142f2b3", "long_name": "eMariete RAK f2b3", "short_name": "eMa3", "macaddr": "/02xQvKz", "hw_model": "RAK4631", "public_key": "QjLwY7hzdYEr5fuB//PGDmq1LteIZu1QZZQjjlByJCg=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (82 bytes)

0a092162313432663262331211654d6172696574652052414b20663262331a04654d61332206ff4db142f2b3280942204232f063b87375812be5fb81fff3c60e6ab52ed78866ed506594238e507224284800

Hex Analysis:

Size:	82 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 #30123835 Success

Packet Information

Payload Data

Decoded Data: