Packet #5225037

Database ID:	5225037
Mesh Packet ID:	`0x4200ce2e` Used for correlation across gateways
Timestamp:	2025-07-30 17:50:21 UTC
From Node:	EA3JAK prova1 (jak1)
To Node:	SantGregori-V01-CL-868 📱 🌐 (val1)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	EB3FWC-Girona📡-GW-868 (EB3F)
Channel:	LongFast
RSSI:	-97 dBm
SNR:	-7.5 dBm
Hop Info:	2/5 hops Start: 5, Limit: 3

Long Name:	EA3JAK prova1
Short Name:	jak1
Node ID:	!0363382a
MAC Address:	QQQDYzgq
Hardware:	PRIVATE_HW

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:	79 bytes
Gateway:	!433adf3c
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	2 / 5

Privacy Summary

Exposure Level:
Direct Message

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 1 more...

Exposure Risks:
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
+ 2 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!433adf3c` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (79 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`56834090` Source node ID	uint32
`to`	`1033637388` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`79` bytes	size
`hop_limit`	`3` Remaining hops allowed	uint32
`hop_start`	`5` Initial hop limit	uint32
`hops_taken`	`2` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-97.0` dBm Signal strength at gateway	int32
`rx_snr`	`-7.50` dB Signal quality at gateway	float
`rx_time`	`1753897819` 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`	Not set	uint32
`tx_after`	Not set	uint32
`timestamp`	`1753897821.295867` 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
✓ Gateway node ID tracked

Exposure Risks:

⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (2 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!433adf3c`
Signal Metrics:	RSSI: -97.0 dBm SNR: -7.50 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	79 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!0363382a", "long_name": "EA3JAK prova1", "short_name": "jak1", "macaddr": "QQQDYzgq", "hw_model": "PRIVATE_HW" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!433adf3c", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 56834090, "to": 1033637388, "id": 1107349038, "rx_time": 1753897819, "rx_snr": -7.5, "rx_rssi": -97, "hop_limit": 3, "hop_start": 5, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 0, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09213033363333383261120d4541334a414b2070726f7661311a046a616b31220641040363382a28ff01422027a96334f6bae926cfb8321c2a838293dc90c064215059ccc518b332587ef82d4800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!0363382a", "long_name": "EA3JAK prova1", "short_name": "jak1", "macaddr": "QQQDYzgq", "hw_model": "PRIVATE_HW", "public_key": "J6ljNPa66SbPuDIcKoOCk9yQwGQhUFnMxRizMlh++C0=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (79 bytes)

0a09213033363333383261120d4541334a414b2070726f7661311a046a616b31220641040363382a28ff01422027a96334f6bae926cfb8321c2a838293dc90c064215059ccc518b332587ef82d4800

Hex Analysis:

Size:	79 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 #5225037 Success

Packet Information

Payload Data

Decoded Data: