Packet #2867922

Database ID:	2867922
Mesh Packet ID:	`0x8ebc40ed` Used for correlation across gateways
Timestamp:	2025-08-17 21:01:41 UTC
From Node:	Berend elst solar (warr)
To Node:	Lingemeer Schuur 🛰️🏠☀️ (LMSC)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Matrixed H3 (MtxH)
Channel:	LongFast
RSSI:	-123 dBm
SNR:	-14.25 dBm
Hop Info:	7/7 hops Start: 7, Limit: 0

Long Name:	Berend elst solar
Short Name:	warr
Node ID:	!db2e98c0
MAC Address:	EFHbLpjA
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:	82 bytes
Gateway:	!da544e28
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	7 / 7

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`	`!da544e28` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (82 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3677264064` Source node ID	uint32
`to`	`1812088335` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`82` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`7` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-123.0` dBm Signal strength at gateway	int32
`rx_snr`	`-14.25` dB Signal quality at gateway	float
`rx_time`	`1751162185` 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`	Not set	uint32
`tx_after`	Not set	uint32
`timestamp`	`1755457301.1915107` 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 (7 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!da544e28`
Signal Metrics:	RSSI: -123.0 dBm SNR: -14.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	82 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!db2e98c0", "long_name": "Berend elst solar", "short_name": "warr", "macaddr": "EFHbLpjA", "hw_model": "HELTEC_WSL_V3" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!da544e28", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3677264064, "to": 1812088335, "id": 2394702061, "rx_time": 1751162185, "rx_snr": -14.25, "rx_rssi": -123, "hop_limit": 0, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 0, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a092164623265393863301211426572656e6420656c737420736f6c61721a047761727222061051db2e98c0282c422096208c624c595da050aaa943a9964d813ba9ebde48ff6fcdc2c205ab1d5eca6b4800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!db2e98c0", "long_name": "Berend elst solar", "short_name": "warr", "macaddr": "EFHbLpjA", "hw_model": "HELTEC_WSL_V3", "public_key": "liCMYkxZXaBQqqlDqZZNgTup695I/2/NwsIFqx1eyms=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (82 bytes)

0a092164623265393863301211426572656e6420656c737420736f6c61721a047761727222061051db2e98c0282c422096208c624c595da050aaa943a9964d813ba9ebde48ff6fcdc2c205ab1d5eca6b4800

Hex Analysis:

Size:	82 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 #2867922 Success

Packet Information

Payload Data

Decoded Data: