Packet #4676411

Database ID:	4676411
Mesh Packet ID:	`0x4177519b` Used for correlation across gateways
Timestamp:	2025-07-24 17:18:35 UTC
From Node:	Decopificador 🚙 (Deco)
To Node:	TOTANA 868Mhz T3S3 🛰🕸🔥📡🌞 (TOTA)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Decopificador 🚙 (Deco)
Channel:	LongFast
RSSI:	Unknown
SNR:	Unknown
Hop Info:	0/7 hops Start: 7, Limit: 7

Long Name:	Decopificador 🚙
Short Name:	Deco
Node ID:	!435a8828
MAC Address:	SMpDWogo
Hardware:	LILYGO_TBEAM_S3_CORE

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:	81 bytes
Gateway:	!435a8828
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

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!435a8828` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (81 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`1130006568` Source node ID	uint32
`to`	`1658396004` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`81` 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`	Not set	int32
`rx_snr`	Not set	float
`rx_time`	`1753377514` Receive timestamp	fixed32
`via_mqtt`	False Direct LoRa transmission	bool
`want_ack`	False No ACK requested	bool
`priority`	`10` Packet priority level	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`	`1753377515.8773904` 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

MQTT-Specific Fields

Gateway ID:	`!435a8828`
Zero Hop Policy:	Enabled Direct gateway connection

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	81 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!435a8828", "long_name": "Decopificador 🚙", "short_name": "Deco", "macaddr": "SMpDWogo", "hw_model": "LILYGO_TBEAM_S3_CORE" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!435a8828", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1130006568, "to": 1658396004, "id": 1098338715, "rx_time": 1753377514, "rx_snr": 0.0, "rx_rssi": 0, "hop_limit": 7, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 10, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 40, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a0921343335613838323812124465636f706966696361646f7220f09f9a991a044465636f220648ca435a8828280c42205c6408b5fd8a0fa31c2fefad22e1146ada17a18433c28567cc1075a759231872", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!435a8828", "long_name": "Decopificador 🚙", "short_name": "Deco", "macaddr": "SMpDWogo", "hw_model": "LILYGO_TBEAM_S3_CORE", "public_key": "XGQItf2KD6McL++tIuEUatoXoYQzwoVnzBB1p1kjGHI=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (81 bytes)

0a0921343335613838323812124465636f706966696361646f7220f09f9a991a044465636f220648ca435a8828280c42205c6408b5fd8a0fa31c2fefad22e1146ada17a18433c28567cc1075a759231872

Hex Analysis:

Size:	81 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 #4676411 Success

Packet Information

Payload Data

Decoded Data: