Packet #3964218

Database ID:	3964218
Mesh Packet ID:	`0xb03d1f14` Used for correlation across gateways
Timestamp:	2025-07-17 11:49:32 UTC
From Node:	Mango 📱 (dd0a)
To Node:	⚡️📡🎙 NMG MIX 🎙📡⚡️ (NMG)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Mango 📱 (dd0a)
Channel:	LongFast
RSSI:	Unknown
SNR:	Unknown
Hop Info:	0/2 hops Start: 2, Limit: 2

Long Name:	Mango 📱
Short Name:	dd0a
Node ID:	!c934dd0a
MAC Address:	6CzJNN0K
Hardware:	T_ECHO

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:	75 bytes
Gateway:	!c934dd0a
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

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!c934dd0a` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (75 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3375684874` Source node ID	uint32
`to`	`3676913768` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`75` 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`	Not set	int32
`rx_snr`	Not set	float
`rx_time`	`1752752975` Receive timestamp	fixed32
`via_mqtt`	False Direct LoRa transmission	bool
`want_ack`	False No ACK requested	bool
`priority`	`70` 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`	`10` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1752752972.7088351` 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:	`!c934dd0a`
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:	75 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!c934dd0a", "long_name": "Mango 📱", "short_name": "dd0a", "macaddr": "6CzJNN0K", "hw_model": "T_ECHO" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!c934dd0a", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3375684874, "to": 3676913768, "id": 2956795668, "rx_time": 1752752975, "rx_snr": 0.0, "rx_rssi": 0, "hop_limit": 2, "hop_start": 2, "via_mqtt": 0, "want_ack": 0, "priority": 70, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 10, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09216339333464643061120a4d616e676f20f09f93b11a04646430612206e82cc934dd0a28074220ad155a176092fd21aa0d6ab714e81225307460c2ea3f778377f849adb7d181174800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!c934dd0a", "long_name": "Mango 📱", "short_name": "dd0a", "macaddr": "6CzJNN0K", "hw_model": "T_ECHO", "public_key": "rRVaF2CS/SGqDWq3FOgSJTB0YMLqP3eDd/hJrbfRgRc=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (75 bytes)

0a09216339333464643061120a4d616e676f20f09f93b11a04646430612206e82cc934dd0a28074220ad155a176092fd21aa0d6ab714e81225307460c2ea3f778377f849adb7d181174800

Hex Analysis:

Size:	75 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 #3964218 Success

Packet Information

Payload Data

Decoded Data: