Packet #173273

Database ID:	173273
Mesh Packet ID:	`0x9c633f6f` Used for correlation across gateways
Timestamp:	2025-09-10 11:03:27 UTC
From Node:	DE:D0:CE:C0 (cec0)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	DE:D0:CE:C0 (cec0)
Channel:	Bulgaria
RSSI:	Unknown
SNR:	Unknown
Hop Info:	0/2 hops Start: 2, Limit: 2

Long Name:	DE:D0:CE:C0
Short Name:	cec0
Node ID:	!ded0cec0
MAC Address:	ysre0M7A
Hardware:	PORTDUINO

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:	!ded0cec0
Channel:	Bulgaria
Payload Type:	NODEINFO_APP
Hop Count:	Unknown / 2

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: Bulgaria
+ 2 more...

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!ded0cec0` Node ID format
`channel_id`	`Bulgaria`
`packet`	`MeshPacket` (78 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3738226368` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`78` 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`	Not set	int32
`rx_snr`	Not set	float
`rx_time`	`1757491348` Receive timestamp	fixed32
`via_mqtt`	False Direct LoRa transmission	bool
`want_ack`	False No ACK requested	bool
`priority`	`10` Packet priority level	enum
`delayed`	Not set	enum
`channel`	Not set	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	Not set	uint32
`relay_node`	`192` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1757491407.7736921` 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)
✓ Custom channel: Bulgaria
✓ Gateway node ID tracked
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers

MQTT-Specific Fields

Gateway ID:	`!ded0cec0`
Zero Hop Policy:	Enabled Direct gateway connection

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": "!ded0cec0", "long_name": "DE:D0:CE:C0", "short_name": "cec0", "macaddr": "ysre0M7A", "hw_model": "PORTDUINO" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!ded0cec0", "channel_id": "Bulgaria", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3738226368, "to": 4294967295, "id": 2623749999, "rx_time": 1757491348, "rx_snr": 0.0, "rx_rssi": 0, "hop_limit": 2, "hop_start": 2, "via_mqtt": 0, "want_ack": 0, "priority": 10, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 192, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09216465643063656330120b44453a44303a43453a43301a04636563302206cacaded0cec0282538024220e9601abc923a9a281b4c014caefc3563e2d969beabed79d04aac034a0a23df1a4801", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!ded0cec0", "long_name": "DE:D0:CE:C0", "short_name": "cec0", "macaddr": "ysre0M7A", "hw_model": "PORTDUINO", "role": "ROUTER", "public_key": "6WAavJI6migbTAFMrvw1Y+LZab6r7XnQSqwDSgoj3xo=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (78 bytes)

0a09216465643063656330120b44453a44303a43453a43301a04636563302206cacaded0cec0282538024220e9601abc923a9a281b4c014caefc3563e2d969beabed79d04aac034a0a23df1a4801

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 #173273 Success

Packet Information

Payload Data

Decoded Data: