Packet #2867878

Database ID:	2867878
Mesh Packet ID:	`0x193e7a3d` Used for correlation across gateways
Timestamp:	2025-08-17 21:01:13 UTC
From Node:	NL6812-5 Yagi NW 345 º 2.6.10 (MT05)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Matrixed H3 (MtxH)
Channel:	LongFast
RSSI:	-35 dBm
SNR:	7.0 dBm
Hop Info:	3/3 hops Start: 3, Limit: 0

Long Name:	NL6812-5 Yagi NW 345 º 2.6.10
Short Name:	MT05
Node ID:	!da58539c
MAC Address:	NLfaWFOc
Hardware:	TLORA_T3_S3

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:	93 bytes
Gateway:	!da544e28
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	3 / 3

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
+ 3 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` (93 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3663221660` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`93` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`3` Initial hop limit	uint32
`hops_taken`	`3` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-35.0` dBm Signal strength at gateway	int32
`rx_snr`	`7.00` dB Signal quality at gateway	float
`rx_time`	`1751162156` 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`	`1755457273.0827792` Unix timestamp	uint32

MQTT Privacy & Exposure Analysis

Analysis of privacy features and exposure risks when packet is shared via MQTT

Exposure Level: Broadcast

Privacy Features:

✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (3 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!da544e28`
Signal Metrics:	RSSI: -35.0 dBm SNR: 7.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	93 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!da58539c", "long_name": "NL6812-5 Yagi NW 345 º 2.6.10", "short_name": "MT05", "macaddr": "NLfaWFOc", "hw_model": "TLORA_T3_S3" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!da544e28", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3663221660, "to": 4294967295, "id": 423524925, "rx_time": 1751162156, "rx_snr": 7.0, "rx_rssi": -35, "hop_limit": 0, "hop_start": 3, "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": "0a09216461353835333963121e4e4c363831322d352059616769204e572033343520c2ba20322e362e31301a044d543035220634b7da58539c28104220ae378336511d02e3ec3a4fc61e04f216969ef012e5fbd75d2d43327132a2e311", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!da58539c", "long_name": "NL6812-5 Yagi NW 345 º 2.6.10", "short_name": "MT05", "macaddr": "NLfaWFOc", "hw_model": "TLORA_T3_S3", "public_key": "rjeDNlEdAuPsOk/GHgTyFpae8BLl+9ddLUMycTKi4xE=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (93 bytes)

0a09216461353835333963121e4e4c363831322d352059616769204e572033343520c2ba20322e362e31301a044d543035220634b7da58539c28104220ae378336511d02e3ec3a4fc61e04f216969ef012e5fbd75d2d43327132a2e311

Hex Analysis:

Size:	93 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 #2867878 Success

Packet Information

Payload Data

Decoded Data: