Packet #454572

Database ID:	454572
Mesh Packet ID:	`0xc00e6185` Utilizado para correlação entre gateways
Tempo:	2025-10-20 19:44:26 UTC
Do Node:	ESPIN.01-8 🇵🇹 (XPN1)
Para o Node:	!b03d68ec (68ec)
Successo:	Processado
Protocolo:	NODEINFO_APP Port: 4

Gateway:	ESPIN.01-8 🇵🇹 (XPN1)
Canal:	LongFast
RSSI:	Unknown
SNR:	Unknown
Info Hop:	0/4 hops Início: 4, Limite: 4

Long Name:	ESPIN.01-8 🇵🇹
Short Name:	XPN1
Node ID:	!33163bd9
MAC Address:	/Z8zFjvZ
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:	84 bytes
Gateway:	!33163bd9
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	Unknown / 4

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`	`!33163bd9` 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`	`857095129` Source node ID	uint32
`to`	`2956814572` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`84` bytes	size
`hop_limit`	`4` Remaining hops allowed	uint32
`hop_start`	`4` 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`	`1760982589` 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`	`217` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1760985866.092623` 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:	`!33163bd9`
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:	84 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!33163bd9", "long_name": "ESPIN.01-8 🇵🇹", "short_name": "XPN1", "macaddr": "/Z8zFjvZ", "hw_model": "TRACKER_T1000_E" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!33163bd9", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 857095129, "to": 2956814572, "id": 3222167941, "rx_time": 1760982589, "rx_snr": 0.0, "rx_rssi": 0, "hop_limit": 4, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 70, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 217, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a092133333136336264391213455350494e2e30312d3820f09f87b5f09f87b91a0458504e312206fd9f33163bd92847380142202d13b96171256aa8dcabb456821d1352e5b3e0fe5e656fb092ef357e84bd9716", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!33163bd9", "long_name": "ESPIN.01-8 🇵🇹", "short_name": "XPN1", "macaddr": "/Z8zFjvZ", "hw_model": "TRACKER_T1000_E", "role": "CLIENT_MUTE", "public_key": "LRO5YXElaqjcq7RWgh0TUuWz4P5eZW+wku81foS9lxY=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (84 bytes)

0a092133333136336264391213455350494e2e30312d3820f09f87b5f09f87b91a0458504e312206fd9f33163bd92847380142202d13b96171256aa8dcabb456821d1352e5b3e0fe5e656fb092ef357e84bd9716

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.

Pacote #454572 Successo

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