Packet #2438023

Database ID:	2438023
Mesh Packet ID:	`0xb79a5cc6` Used for correlation across gateways
Timestamp:	2026-03-20 20:36:58 UTC
From Node:	WGD433 (S433)
To Node:	PAN GW (PAGW)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	SDR433 (M433)
Channel:	Bulgaria
RSSI:	-66 dBm
SNR:	10.25 dBm
Hop Info:	0/2 hops Start: 2, Limit: 2
Relay Node:	`44` S433 Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Long Name:	WGD433
Short Name:	S433
Node ID:	!052bcf44
MAC Address:	PGEFK89E
Hardware:	HELTEC_V2_1

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:	71 bytes
Gateway:	!1cc89460
Channel:	Bulgaria
Payload Type:	NODEINFO_APP
Hop Count:	Unknown / 2

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
⚠ RF signal metrics exposed (location inference possible)

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!1cc89460` Node ID format
`channel_id`	`Bulgaria`
`packet`	`MeshPacket` (71 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`86757188` Source node ID	uint32
`to`	`1236741560` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`71` bytes	size
`hop_limit`	`2` Remaining hops allowed	uint32
`hop_start`	`2` Initial hop limit	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-66.0` dBm Signal strength at gateway	int32
`rx_snr`	`10.25` dB Signal quality at gateway	float
`rx_time`	`1774039017` 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`	`68` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1774039018.0570686` 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
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

⚠ Packet visible to MQTT subscribers
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!1cc89460`
Zero Hop Policy:	Enabled Direct gateway connection
Signal Metrics:	RSSI: -66.0 dBm SNR: 10.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	71 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!052bcf44", "long_name": "WGD433", "short_name": "S433", "macaddr": "PGEFK89E", "hw_model": "HELTEC_V2_1" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!1cc89460", "channel_id": "Bulgaria", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 86757188, "to": 1236741560, "id": 3080346822, "rx_time": 1774039017, "rx_snr": 10.25, "rx_rssi": -66, "hop_limit": 2, "hop_start": 2, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 68, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a0921303532626366343412065747443433331a045334333322063c61052bcf44280a4220bafb7b6b9897232c0e8f8d68a72fb4c1ee8693b1afb3572b4d1857bc1950cf214800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!052bcf44", "long_name": "WGD433", "short_name": "S433", "macaddr": "PGEFK89E", "hw_model": "HELTEC_V2_1", "public_key": "uvt7a5iXIywOj41opy+0we6Gk7Gvs1crTRhXvBlQzyE=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (71 bytes)

0a0921303532626366343412065747443433331a045334333322063c61052bcf44280a4220bafb7b6b9897232c0e8f8d68a72fb4c1ee8693b1afb3572b4d1857bc1950cf214800

Hex Analysis:

Size:	71 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 #2438023 Success

Packet Information

Payload Data

Decoded Data: