Packet #370194

Database ID:	370194
Mesh Packet ID:	`0x86b032b1` Utilizado para correlação entre gateways
Tempo:	2025-10-15 20:36:44 UTC
Do Node:	Hangares-GT-8🇵🇹 (🌊)
Para o Node:	!ffffffff (ffff)
Successo:	Processado
Protocolo:	NODEINFO_APP Port: 4

Gateway:	Andreas 📡 CL-868🇵🇹 (M1AB)
Canal:	LongFast
RSSI:	-115 dBm
SNR:	-13.25 dBm
Info Hop:	1/4 hops Início: 4, Limite: 3

Long Name:	Hangares-GT-8🇵🇹
Short Name:	🌊
Node ID:	!d22c827c
MAC Address:	6vTSLIJ8
Hardware:	HELTEC_MESH_NODE_T114

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:	!b03d10c8
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`	`!b03d10c8` 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`	`3526132348` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`84` 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`	`-115.0` dBm Signal strength at gateway	int32
`rx_snr`	`-13.25` dB Signal quality at gateway	float
`rx_time`	`1760557003` 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`	`1760557004.2479296` 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:	`!b03d10c8`
Signal Metrics:	RSSI: -115.0 dBm SNR: -13.25 dB

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": "!d22c827c", "long_name": "Hangares-GT-8🇵🇹", "short_name": "🌊", "macaddr": "6vTSLIJ8", "hw_model": "HELTEC_MESH_NODE_T114" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!b03d10c8", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3526132348, "to": 4294967295, "id": 2259694257, "rx_time": 1760557003, "rx_snr": -13.25, "rx_rssi": -115, "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": 0, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09216432326338323763121548616e67617265732d47542d38f09f87b5f09f87b91a04f09f8c8a2206eaf4d22c827c28454220e4e432d48e235877b16cc301435dc2b438d3a9bb498152f4e2266cc793620c3a", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!d22c827c", "long_name": "Hangares-GT-8🇵🇹", "short_name": "🌊", "macaddr": "6vTSLIJ8", "hw_model": "HELTEC_MESH_NODE_T114", "public_key": "5OQy1I4jWHexbMMBQ13CtDjTqbtJgVL04iZsx5NiDDo=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (84 bytes)

0a09216432326338323763121548616e67617265732d47542d38f09f87b5f09f87b91a04f09f8c8a2206eaf4d22c827c28454220e4e432d48e235877b16cc301435dc2b438d3a9bb498152f4e2266cc793620c3a

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 #370194 Successo

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