Packet #3948908

Database ID:	3948908
Mesh Packet ID:	`0x10d1c06b` Used for correlation across gateways
Timestamp:	2025-07-17 07:16:31 UTC
From Node:	📡 Iturrama 01 GAUL (ITU1)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	📡 BURLADA 🔇 (NO DM) (BUR)
Channel:	LongFast
RSSI:	-112 dBm
SNR:	-13.25 dBm
Hop Info:	3/5 hops Start: 5, Limit: 2

Long Name:	📡 Iturrama 01 GAUL
Short Name:	ITU1
Node ID:	!3da06586
MAC Address:	zaY9oGWG
Hardware:	NRF52_PROMICRO_DIY

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:	86 bytes
Gateway:	!ea8f8b8c
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	3 / 5

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`	`!ea8f8b8c` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (86 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`1033921926` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`86` bytes	size
`hop_limit`	`2` Remaining hops allowed	uint32
`hop_start`	`5` Initial hop limit	uint32
`hops_taken`	`3` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-112.0` dBm Signal strength at gateway	int32
`rx_snr`	`-13.25` dB Signal quality at gateway	float
`rx_time`	`1752736590` 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`	`215` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1752736591.2550151` 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 (3 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!ea8f8b8c`
Signal Metrics:	RSSI: -112.0 dBm SNR: -13.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	86 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!3da06586", "long_name": "📡 Iturrama 01 GAUL", "short_name": "ITU1", "macaddr": "zaY9oGWG", "hw_model": "NRF52_PROMICRO_DIY" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!ea8f8b8c", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1033921926, "to": 4294967295, "id": 282181739, "rx_time": 1752736590, "rx_snr": -13.25, "rx_rssi": -112, "hop_limit": 2, "hop_start": 5, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 215, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a092133646130363538361215f09f93a1204974757272616d61203031204741554c1a04495455312206cda63da06586283f42205383bd5aab81d7b2a7a9d82f6a0b554c26ffbbca3a50066587eff47eaed5161e4801", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!3da06586", "long_name": "📡 Iturrama 01 GAUL", "short_name": "ITU1", "macaddr": "zaY9oGWG", "hw_model": "NRF52_PROMICRO_DIY", "public_key": "U4O9WquB17KnqdgvagtVTCb/u8o6UAZlh+/0fq7VFh4=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (86 bytes)

0a092133646130363538361215f09f93a1204974757272616d61203031204741554c1a04495455312206cda63da06586283f42205383bd5aab81d7b2a7a9d82f6a0b554c26ffbbca3a50066587eff47eaed5161e4801

Hex Analysis:

Size:	86 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 #3948908 Success

Packet Information

Payload Data

Decoded Data: