Packet #2615818

Database ID:	2615818
Mesh Packet ID:	`0x50bbaff2` Used for correlation across gateways
Timestamp:	2026-04-02 19:35:00 UTC
From Node:	LZ1CK (1CK)
To Node:	Meshtastic 903c (903c)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	K3000 (k300)
Channel:	Bulgaria
RSSI:	-45 dBm
SNR:	11.75 dBm
Hop Info:	2/2 hops Start: 2, Limit: 0
Relay Node:	`2b` KMSH Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Long Name:	LZ1CK
Short Name:	1CK
Node ID:	!336a8498
MAC Address:	ZOgzaoSY
Hardware:	HELTEC_WSL_V3

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:	69 bytes
Gateway:	!0407c954
Channel:	Bulgaria
Payload Type:	NODEINFO_APP
Hop Count:	2 / 2

Privacy Summary

Exposure Level:
Direct Message

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 2 more...

Exposure Risks:
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (2 hops)
+ 1 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!0407c954` Node ID format
`channel_id`	`Bulgaria`
`packet`	`MeshPacket` (69 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`862618776` Source node ID	uint32
`to`	`2715390012` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`69` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`2` Initial hop limit	uint32
`hops_taken`	`2` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-45.0` dBm Signal strength at gateway	int32
`rx_snr`	`11.75` dB Signal quality at gateway	float
`rx_time`	`1775158498` 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`	`43` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1775158500.4091413` 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: Bulgaria
✓ Gateway node ID tracked

Exposure Risks:

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

MQTT-Specific Fields

Gateway ID:	`!0407c954`
Signal Metrics:	RSSI: -45.0 dBm SNR: 11.75 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	69 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!336a8498", "long_name": "LZ1CK", "short_name": "1CK", "macaddr": "ZOgzaoSY", "hw_model": "HELTEC_WSL_V3" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!0407c954", "channel_id": "Bulgaria", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 862618776, "to": 2715390012, "id": 1354477554, "rx_time": 1775158498, "rx_snr": 11.75, "rx_rssi": -45, "hop_limit": 0, "hop_start": 2, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 43, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a0921333336613834393812054c5a31434b1a0331434b220664e8336a8498282c380c4220060e668162561c4611989515a204521bf284be7adfad3e24be48594cd488de60", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!336a8498", "long_name": "LZ1CK", "short_name": "1CK", "macaddr": "ZOgzaoSY", "hw_model": "HELTEC_WSL_V3", "role": "CLIENT_BASE", "public_key": "Bg5mgWJWHEYRmJUVogRSG/KEvnrfrT4kvkhZTNSI3mA=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (69 bytes)

0a0921333336613834393812054c5a31434b1a0331434b220664e8336a8498282c380c4220060e668162561c4611989515a204521bf284be7adfad3e24be48594cd488de60

Hex Analysis:

Size:	69 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 #2615818 Success

Packet Information

Payload Data

Decoded Data: