Packet #1233005

Database ID:	1233005
Mesh Packet ID:	`0x68e9d2d5` Used for correlation across gateways
Timestamp:	2025-06-19 07:33:32 UTC
From Node:	SAB🫆📟🐧 (SnCr)
To Node:	Daimus-M1 (39ac)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Daimus-M1 (39ac)
Channel:	LongFast
RSSI:	-15 dBm
SNR:	3.0 dBm
Hop Info:	0/2 hops Start: 2, Limit: 2

Long Name:	SanCardis
Short Name:	SnCr
Node ID:	!acaec225
MAC Address:	3F2srsIl
Hardware:	TRACKER_T1000_E

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:	74 bytes
Gateway:	!16c939ac
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	Unknown / 2

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`	`!16c939ac` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (74 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2897134117` Source node ID	uint32
`to`	`382286252` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`74` bytes	size
`hop_limit`	`2` Remaining hops allowed	uint32
`hop_start`	`2` Initial hop limit	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-15.0` dBm Signal strength at gateway	int32
`rx_snr`	`3.00` dB Signal quality at gateway	float
`rx_time`	`1750318412` 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`	`1750318412.7808256` 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:	`!16c939ac`
Zero Hop Policy:	Enabled Direct gateway connection
Signal Metrics:	RSSI: -15.0 dBm SNR: 3.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	74 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!acaec225", "long_name": "SanCardis", "short_name": "SnCr", "macaddr": "3F2srsIl", "hw_model": "TRACKER_T1000_E" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!16c939ac", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2897134117, "to": 382286252, "id": 1760154325, "rx_time": 1750318412, "rx_snr": 3.0, "rx_rssi": -15, "hop_limit": 2, "hop_start": 2, "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": "0a09216163616563323235120953616e4361726469731a04536e43722206dc5dacaec225284738014220c1b37e0eda826a9698d2eff1a51022689d65039a461f391c7fb47c6cca505a56", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!acaec225", "long_name": "SanCardis", "short_name": "SnCr", "macaddr": "3F2srsIl", "hw_model": "TRACKER_T1000_E", "role": "CLIENT_MUTE", "public_key": "wbN+DtqCapaY0u/xpRAiaJ1lA5pGHzkcf7R8bMpQWlY=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (74 bytes)

0a09216163616563323235120953616e4361726469731a04536e43722206dc5dacaec225284738014220c1b37e0eda826a9698d2eff1a51022689d65039a461f391c7fb47c6cca505a56

Hex Analysis:

Size:	74 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 #1233005 Success

Packet Information

Payload Data

Decoded Data: