Packet #4057628

Database ID:	4057628
Mesh Packet ID:	`0x137db977` Used for correlation across gateways
Timestamp:	2025-07-18 15:42:04 UTC
From Node:	Alma Tracker (AGPS)
To Node:	!00000001 (0001)
Success:	Processed
Protocol:	NEIGHBORINFO_APP Port: 71

Gateway:	Alma Tracker (AGPS)
Channel:	MediumSlow
RSSI:	Unknown
SNR:	Unknown
Hop Info:	0/5 hops Start: 5, Limit: 5

Reporting Node:	Alma Tracker (AGPS)
Last Sent By:	Alma Tracker (AGPS)
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:	!1c7b9514
Channel:	MediumSlow
Payload Type:	NEIGHBORINFO_APP
Hop Count:	Unknown / 5

Privacy Summary

Exposure Level:
Direct Message

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 3 more...

Exposure Risks:
⚠ Packet visible to MQTT subscribers

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!1c7b9514` Node ID format
`channel_id`	`MediumSlow`
`packet`	`MeshPacket` (15 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`477861140` Source node ID	uint32
`to`	`1` Target node ID	uint32
`decoded.portnum`	`71` NEIGHBORINFO_APP	enum
`decoded.payload_length`	`15` bytes	size
`hop_limit`	`5` Remaining hops allowed	uint32
`hop_start`	`5` 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`	`1752853325` Receive timestamp	fixed32
`via_mqtt`	False Direct LoRa transmission	bool
`want_ack`	False No ACK requested	bool
`priority`	`10` 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`	`20` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1752853324.9073157` 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
✓ Custom channel: MediumSlow
✓ Gateway node ID tracked
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

⚠ Packet visible to MQTT subscribers

MQTT-Specific Fields

Gateway ID:	`!1c7b9514`
Zero Hop Policy:	Enabled Direct gateway connection

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": 477861140, "last_sent_by_id": 477861140, "node_broadcast_interval_secs": 3600, "neighbors": [], "neighbor_count": 0, "node_name": "Alma Tracker (AGPS)", "last_sent_by_name": "Alma Tracker (AGPS)" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!1c7b9514", "channel_id": "MediumSlow", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 477861140, "to": 1, "id": 327006583, "rx_time": 1752853325, "rx_snr": 0.0, "rx_rssi": 0, "hop_limit": 5, "hop_start": 5, "via_mqtt": 0, "want_ack": 0, "priority": 10, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 20, "tx_after": 0, "decoded": { "portnum": 71, "payload": "0894aaeee3011094aaeee30118901c", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "node_id": 477861140, "last_sent_by_id": 477861140, "node_broadcast_interval_secs": 3600, "type": "protobuf", "portnum": "NEIGHBORINFO_APP", "message_class": "NeighborInfo" } } } }

Raw Packet Data (15 bytes)

0894aaeee3011094aaeee30118901c

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 #4057628 Success

Packet Information

Payload Data

Decoded Data:

Neighbor Information Report

0