Packet #2773000

Database ID:	2773000
Mesh Packet ID:	`0x560b3e96` Used for correlation across gateways
Timestamp:	2026-03-04 13:55:34 UTC
From Node:	Alges_Alto_-GW-8🇵🇹 (AlgA)
To Node:	Gps2_Lrs2660 (Gps2)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Chaveca-GW-8🇵🇹 (Chvc)
Channel:	LongFast
RSSI:	-81 dBm
SNR:	2.75 dBm
Hop Info:	5/5 hops Start: 5, Limit: 0

Long Name:	Alges_Alto_-GW-8🇵🇹
Short Name:	AlgA
Node ID:	!9ee996ac
MAC Address:	nBOe6Zas
Hardware:	HELTEC_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:	91 bytes
Gateway:	!62709e9a
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	5 / 5

Privacy Summary

Exposure Level:
Direct Message

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 1 more...

Exposure Risks:
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
+ 2 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!62709e9a` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (91 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2666108588` Source node ID	uint32
`to`	`3391482305` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`91` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`5` Initial hop limit	uint32
`hops_taken`	`5` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-81.0` dBm Signal strength at gateway	int32
`rx_snr`	`2.75` dB Signal quality at gateway	float
`rx_time`	`1772631456` 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`	`124` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1772632534.9334145` 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
✓ Gateway node ID tracked

Exposure Risks:

⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (5 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!62709e9a`
Signal Metrics:	RSSI: -81.0 dBm SNR: 2.75 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	91 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!9ee996ac", "long_name": "Alges_Alto_-GW-8🇵🇹", "short_name": "AlgA", "macaddr": "nBOe6Zas", "hw_model": "HELTEC_V3" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!62709e9a", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2666108588, "to": 3391482305, "id": 1443577494, "rx_time": 1772631456, "rx_snr": 2.75, "rx_rssi": -81, "hop_limit": 0, "hop_start": 5, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 124, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a092139656539393661631218416c6765735f416c746f5f2d47572d38f09f87b5f09f87b91a04416c674122069c139ee996ac282b380c4220a306f4858215cd5f11198767e19ae3f8377ad7e941d7fe61aac52eab40d28f084800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!9ee996ac", "long_name": "Alges_Alto_-GW-8🇵🇹", "short_name": "AlgA", "macaddr": "nBOe6Zas", "hw_model": "HELTEC_V3", "role": "CLIENT_BASE", "public_key": "owb0hYIVzV8RGYdn4Zrj+Dd61+lB1/5hqsUuq0DSjwg=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (91 bytes)

0a092139656539393661631218416c6765735f416c746f5f2d47572d38f09f87b5f09f87b91a04416c674122069c139ee996ac282b380c4220a306f4858215cd5f11198767e19ae3f8377ad7e941d7fe61aac52eab40d28f084800

Hex Analysis:

Size:	91 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 #2773000 Success

Packet Information

Payload Data

Decoded Data: