Packet #497729

Database ID:	497729
Mesh Packet ID:	`0x53c71e50` Utilizado para correlação entre gateways
Tempo:	2025-10-23 04:00:31 UTC
Do Node:	CT7BPR2-GT-8🇵🇹 (BPR2)
Para o Node:	!ffffffff (ffff)
Successo:	Processado
Protocolo:	NODEINFO_APP Port: 4

Gateway:	KOLHF-RL-8🇵🇹 (OLHO)
Canal:	LongFast
RSSI:	-90 dBm
SNR:	-4.5 dBm
Info Hop:	1/4 hops Início: 4, Limite: 3

Long Name:	CT7BPR2-GT-8🇵🇹
Short Name:	BPR2
Node ID:	!0241e81f
MAC Address:	yc0CQegf
Hardware:	RAK4631

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:	85 bytes
Gateway:	!eba69543
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	1 / 4

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
+ 3 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!eba69543` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (85 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`37873695` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`85` bytes	size
`hop_limit`	`3` Remaining hops allowed	uint32
`hop_start`	`4` Initial hop limit	uint32
`hops_taken`	`1` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-90.0` dBm Signal strength at gateway	int32
`rx_snr`	`-4.50` dB Signal quality at gateway	float
`rx_time`	`1761188431` 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`	`124` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1761188431.7821565` Unix timestamp	uint32

MQTT Privacy & Exposure Analysis

Analysis of privacy features and exposure risks when packet is shared via MQTT

Exposure Level: Broadcast

Privacy Features:

✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (1 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!eba69543`
Signal Metrics:	RSSI: -90.0 dBm SNR: -4.50 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	85 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!0241e81f", "long_name": "CT7BPR2-GT-8🇵🇹", "short_name": "BPR2", "macaddr": "yc0CQegf", "hw_model": "RAK4631" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!eba69543", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 37873695, "to": 4294967295, "id": 1405558352, "rx_time": 1761188431, "rx_snr": -4.5, "rx_rssi": -90, "hop_limit": 3, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 124, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a092130323431653831661214435437425052322d47542d38f09f87b5f09f87b91a04425052322206c9cd0241e81f28094220b648e37249e38fa9ed2ee24fc650b319f8da6b9650cd285c44b3985476ef7d034800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!0241e81f", "long_name": "CT7BPR2-GT-8🇵🇹", "short_name": "BPR2", "macaddr": "yc0CQegf", "hw_model": "RAK4631", "public_key": "tkjjcknjj6ntLuJPxlCzGfjaa5ZQzShcRLOYVHbvfQM=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (85 bytes)

0a092130323431653831661214435437425052322d47542d38f09f87b5f09f87b91a04425052322206c9cd0241e81f28094220b648e37249e38fa9ed2ee24fc650b319f8da6b9650cd285c44b3985476ef7d034800

Hex Analysis:

Size:	85 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 #497729 Successo

Informação de Pacotes

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