Packet #1903096

Database ID:	1903096
Mesh Packet ID:	`0xafe8eded` Used for correlation across gateways
Timestamp:	2025-06-26 13:15:25 UTC
From Node:	RS_232 (RS)
To Node:	EA2EZX-1-CL-868-2fec (2EZX)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	EA2EZX-1-CL-868-2fec (2EZX)
Channel:	LongFast
RSSI:	-104 dBm
SNR:	0.5 dBm
Hop Info:	0/3 hops Start: 3, Limit: 3

Long Name:	RS_232
Short Name:	RS
Node ID:	!c9999128
MAC Address:	7GTJmZEo
Hardware:	HELTEC_V2_1

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:	69 bytes
Gateway:	!b03d2fec
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	Unknown / 3

Privacy Summary

Exposure Level:
Direct Message

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 2 more...

Exposure Risks:
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
+ 1 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!b03d2fec` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (69 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3382284584` Source node ID	uint32
`to`	`2956799980` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`69` bytes	size
`hop_limit`	`3` Remaining hops allowed	uint32
`hop_start`	`3` Initial hop limit	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-104.0` dBm Signal strength at gateway	int32
`rx_snr`	`0.50` dB Signal quality at gateway	float
`rx_time`	`1750943719` 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`	`40` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1750943725.5632265` 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
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

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

MQTT-Specific Fields

Gateway ID:	`!b03d2fec`
Zero Hop Policy:	Enabled Direct gateway connection
Signal Metrics:	RSSI: -104.0 dBm SNR: 0.50 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	69 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!c9999128", "long_name": "RS_232", "short_name": "RS", "macaddr": "7GTJmZEo", "hw_model": "HELTEC_V2_1" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!b03d2fec", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3382284584, "to": 2956799980, "id": 2951278061, "rx_time": 1750943719, "rx_snr": 0.5, "rx_rssi": -104, "hop_limit": 3, "hop_start": 3, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 40, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09216339393939313238120652535f3233321a0252532206ec64c9999128280a42208f1c88cfb13d2b2f5cf5c119dc0e4c9fc4d1fadfbecc8222a4cf5da6625d37744800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!c9999128", "long_name": "RS_232", "short_name": "RS", "macaddr": "7GTJmZEo", "hw_model": "HELTEC_V2_1", "public_key": "jxyIz7E9Ky9c9cEZ3A5Mn8TR+t++zIIipM9dpmJdN3Q=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (69 bytes)

0a09216339393939313238120652535f3233321a0252532206ec64c9999128280a42208f1c88cfb13d2b2f5cf5c119dc0e4c9fc4d1fadfbecc8222a4cf5da6625d37744800

Hex Analysis:

Size:	69 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 #1903096 Success

Packet Information

Payload Data

Decoded Data: