Packet #2672597

Database ID:	2672597
Mesh Packet ID:	`0x7affb469` Used for correlation across gateways
Timestamp:	2025-07-03 08:20:51 UTC
From Node:	Planeta X (PX)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NEIGHBORINFO_APP Port: 71

Gateway:	EA2FCG T1000 (2FCG)
Channel:	Iberia
RSSI:	-109 dBm
SNR:	-13.25 dBm
Hop Info:	2/7 hops Start: 7, Limit: 5

Reporting Node:	Planeta X (PX)
Last Sent By:	Planeta X (PX)
Broadcast Interval:	3600 seconds
Neighbors Found:	0

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:	15 bytes
Gateway:	!a9f32bb2
Channel:	Iberia
Payload Type:	NEIGHBORINFO_APP
Hop Count:	2 / 7

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: Iberia
+ 1 more...

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
+ 2 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!a9f32bb2` Node ID format
`channel_id`	`Iberia`
`packet`	`MeshPacket` (15 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3926558948` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`71` NEIGHBORINFO_APP	enum
`decoded.payload_length`	`15` bytes	size
`hop_limit`	`5` Remaining hops allowed	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`2` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-109.0` dBm Signal strength at gateway	int32
`rx_snr`	`-13.25` dB Signal quality at gateway	float
`rx_time`	`1751530853` 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`	`208` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1751530851.5421996` 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)
✓ Custom channel: Iberia
✓ Gateway node ID tracked

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (2 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!a9f32bb2`
Signal Metrics:	RSSI: -109.0 dBm SNR: -13.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NEIGHBORINFO_APP
Size:	15 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "node_id": 3926558948, "last_sent_by_id": 3926558948, "node_broadcast_interval_secs": 3600, "neighbors": [], "neighbor_count": 0, "node_name": "Planeta X (PX)", "last_sent_by_name": "Planeta X (PX)" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!a9f32bb2", "channel_id": "Iberia", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3926558948, "to": 4294967295, "id": 2063578217, "rx_time": 1751530853, "rx_snr": -13.25, "rx_rssi": -109, "hop_limit": 5, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 208, "tx_after": 0, "decoded": { "portnum": 71, "payload": "08e491aad00e10e491aad00e18901c", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "node_id": 3926558948, "last_sent_by_id": 3926558948, "node_broadcast_interval_secs": 3600, "type": "protobuf", "portnum": "NEIGHBORINFO_APP", "message_class": "NeighborInfo" } } } }

Raw Packet Data (15 bytes)

08e491aad00e10e491aad00e18901c

Hex Analysis:

Size:	15 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 #2672597 Success

Packet Information

Payload Data

Decoded Data:

Neighbor Information Report

0