Packet #2866128

Database ID:	2866128
Mesh Packet ID:	`0x1fbef6fc` Used for correlation across gateways
Timestamp:	2025-08-17 20:42:36 UTC
From Node:	Meshtastic 1034 (1034)
To Node:	Faketec c12c36e6 v2.7.3.cf574c7 (36e6)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Hillywood Oost (HOOS)
Channel:	LongFast
RSSI:	-72 dBm
SNR:	7.0 dBm
Hop Info:	0/3 hops Start: 3, Limit: 3

Long Name:	Meshtastic 1034
Short Name:	1034
Node ID:	!da741034
MAC Address:	2DvadBA0
Hardware:	SEEED_XIAO_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:	78 bytes
Gateway:	!da741310
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	Unknown / 3

Privacy Summary

Exposure Level:
Direct Message

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

Exposure Risks:
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
+ 1 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!da741310` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (78 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3665039412` Source node ID	uint32
`to`	`3240900326` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`78` bytes	size
`hop_limit`	`3` Remaining hops allowed	uint32
`hop_start`	`3` Initial hop limit	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-72.0` dBm Signal strength at gateway	int32
`rx_snr`	`7.00` dB Signal quality at gateway	float
`rx_time`	`1755456157` 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`	`1755456156.957184` 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
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

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

MQTT-Specific Fields

Gateway ID:	`!da741310`
Zero Hop Policy:	Enabled Direct gateway connection
Signal Metrics:	RSSI: -72.0 dBm SNR: 7.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	78 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!da741034", "long_name": "Meshtastic 1034", "short_name": "1034", "macaddr": "2DvadBA0", "hw_model": "SEEED_XIAO_S3" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!da741310", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3665039412, "to": 3240900326, "id": 532608764, "rx_time": 1755456157, "rx_snr": 7.0, "rx_rssi": -72, "hop_limit": 3, "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": "0a09216461373431303334120f4d65736874617374696320313033341a04313033342206d83bda7410342851422024e7f41b2266fa270390e287a77393ad8d218eafe5ab5dcab29c3e7f7fc88027", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!da741034", "long_name": "Meshtastic 1034", "short_name": "1034", "macaddr": "2DvadBA0", "hw_model": "SEEED_XIAO_S3", "public_key": "JOf0GyJm+icDkOKHp3OTrY0hjq/lq13Kspw+f3/IgCc=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (78 bytes)

0a09216461373431303334120f4d65736874617374696320313033341a04313033342206d83bda7410342851422024e7f41b2266fa270390e287a77393ad8d218eafe5ab5dcab29c3e7f7fc88027

Hex Analysis:

Size:	78 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 #2866128 Success

Packet Information

Payload Data

Decoded Data: