Packet #2754350

Database ID:	2754350
Mesh Packet ID:	`0xfe1a63a6` Used for correlation across gateways
Timestamp:	2025-08-17 00:58:08 UTC
From Node:	II Opladen Bf (IIbf)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Terwinselen \| Kerkrade \| Netherlands (TKNB)
Channel:	OpenChat
RSSI:	-118 dBm
SNR:	-4.0 dBm
Hop Info:	7/7 hops Start: 7, Limit: 0

Long Name:	II Opladen Bf
Short Name:	IIbf
Node ID:	!16cfa00c
MAC Address:	mKMWz6AM
Hardware:	STATION_G2

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:	80 bytes
Gateway:	!da9d6938
Channel:	OpenChat
Payload Type:	NODEINFO_APP
Hop Count:	7 / 7

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: OpenChat
+ 1 more...

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
+ 2 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!da9d6938` Node ID format
`channel_id`	`OpenChat`
`packet`	`MeshPacket` (80 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`382705676` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`80` 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`	`-118.0` dBm Signal strength at gateway	int32
`rx_snr`	`-4.00` dB Signal quality at gateway	float
`rx_time`	`1755385087` 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`	`1755385088.4894056` 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: OpenChat
✓ Gateway node ID tracked

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (7 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!da9d6938`
Signal Metrics:	RSSI: -118.0 dBm SNR: -4.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	80 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!16cfa00c", "long_name": "II Opladen Bf", "short_name": "IIbf", "macaddr": "mKMWz6AM", "hw_model": "STATION_G2" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!da9d6938", "channel_id": "OpenChat", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 382705676, "to": 4294967295, "id": 4263142310, "rx_time": 1755385087, "rx_snr": -4.0, "rx_rssi": -118, "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": "0a09213136636661303063120d4949204f706c6164656e2042661a0449496266220698a316cfa00c281f380b42202fe6fc255459760f79bad9b02527ba16fedd9a90300de6e452efe52cb3a99e434801", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!16cfa00c", "long_name": "II Opladen Bf", "short_name": "IIbf", "macaddr": "mKMWz6AM", "hw_model": "STATION_G2", "role": "ROUTER_LATE", "public_key": "L+b8JVRZdg95utmwJSe6Fv7dmpAwDebkUu/lLLOpnkM=", "is_unmessagable": true, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (80 bytes)

0a09213136636661303063120d4949204f706c6164656e2042661a0449496266220698a316cfa00c281f380b42202fe6fc255459760f79bad9b02527ba16fedd9a90300de6e452efe52cb3a99e434801

Hex Analysis:

Size:	80 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 #2754350 Success

Packet Information

Payload Data

Decoded Data: