Packet #3895230

Database ID:	3895230
Mesh Packet ID:	`0xd799577f` Used for correlation across gateways
Timestamp:	2025-07-16 16:36:34 UTC
From Node:	The Matrix 📟🌐 (MTrX)
To Node:	EYI_QTH 🗼🌐 (EYI1)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	EYI_QTH 🗼🌐 (EYI1)
Channel:	LongFast
RSSI:	-111 dBm
SNR:	7.0 dBm
Hop Info:	0/7 hops Start: 7, Limit: 7

Long Name:	The Matrix 📟🌐
Short Name:	MTrX
Node ID:	!f98dafc0
MAC Address:	8CT5ja/A
Hardware:	TLORA_V2_1_1P6

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:	84 bytes
Gateway:	!1d628380
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	Unknown / 7

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`	`!1d628380` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (84 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`4186812352` Source node ID	uint32
`to`	`492995456` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`84` bytes	size
`hop_limit`	`7` Remaining hops allowed	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-111.0` dBm Signal strength at gateway	int32
`rx_snr`	`7.00` dB Signal quality at gateway	float
`rx_time`	`1752683793` 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`	`1752683794.1760497` 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:	`!1d628380`
Zero Hop Policy:	Enabled Direct gateway connection
Signal Metrics:	RSSI: -111.0 dBm SNR: 7.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	84 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!f98dafc0", "long_name": "The Matrix 📟🌐", "short_name": "MTrX", "macaddr": "8CT5ja/A", "hw_model": "TLORA_V2_1_1P6" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!1d628380", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 4186812352, "to": 492995456, "id": 3617150847, "rx_time": 1752683793, "rx_snr": 7.0, "rx_rssi": -111, "hop_limit": 7, "hop_start": 7, "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": "0a092166393864616663301213546865204d617472697820f09f939ff09f8c901a044d5472582206f024f98dafc0280342207375cdf4b2eedb3807c6787855bc571c445df9045b015f9da1f05a19b67ba1594801", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!f98dafc0", "long_name": "The Matrix 📟🌐", "short_name": "MTrX", "macaddr": "8CT5ja/A", "hw_model": "TLORA_V2_1_1P6", "public_key": "c3XN9LLu2zgHxnh4VbxXHERd+QRbAV+dofBaGbZ7oVk=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (84 bytes)

0a092166393864616663301213546865204d617472697820f09f939ff09f8c901a044d5472582206f024f98dafc0280342207375cdf4b2eedb3807c6787855bc571c445df9045b015f9da1f05a19b67ba1594801

Hex Analysis:

Size:	84 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 #3895230 Success

Packet Information

Payload Data

Decoded Data: