Packet #1863662

Database ID:	1863662
Mesh Packet ID:	`0xddc5ccd7` Used for correlation across gateways
Timestamp:	2025-06-26 02:56:15 UTC
From Node:	Alicante OpenMesh 1.5 (O1.5)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Solar@zAlex (@le2)
Channel:	LongFast
RSSI:	-121 dBm
SNR:	-10.75 dBm
Hop Info:	1/7 hops Start: 7, Limit: 6

Long Name:	Alicante OpenMesh 1.5
Short Name:	O1.5
Node ID:	!c5c98092
MAC Address:	1xrFyYCS
Hardware:	RAK4631

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:	84 bytes
Gateway:	!a8ea5c5a
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	1 / 7

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`	`!a8ea5c5a` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (84 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3318317202` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`84` bytes	size
`hop_limit`	`6` Remaining hops allowed	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`1` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-121.0` dBm Signal strength at gateway	int32
`rx_snr`	`-10.75` dB Signal quality at gateway	float
`rx_time`	`1750906571` 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`	`84` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1750906575.3841243` 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 (1 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!a8ea5c5a`
Signal Metrics:	RSSI: -121.0 dBm SNR: -10.75 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	84 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!c5c98092", "long_name": "Alicante OpenMesh 1.5", "short_name": "O1.5", "macaddr": "1xrFyYCS", "hw_model": "RAK4631" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!a8ea5c5a", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3318317202, "to": 4294967295, "id": 3720727767, "rx_time": 1750906571, "rx_snr": -10.75, "rx_rssi": -121, "hop_limit": 6, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 84, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a092163356339383039321215416c6963616e7465204f70656e4d65736820312e351a044f312e352206d71ac5c9809228094220bf5af8329688afe488be4b69ac8886ed04a80c93373b2f09d3b25d5c961da46a", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!c5c98092", "long_name": "Alicante OpenMesh 1.5", "short_name": "O1.5", "macaddr": "1xrFyYCS", "hw_model": "RAK4631", "public_key": "v1r4MpaIr+SIvktprIiG7QSoDJM3Oy8J07JdXJYdpGo=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (84 bytes)

0a092163356339383039321215416c6963616e7465204f70656e4d65736820312e351a044f312e352206d71ac5c9809228094220bf5af8329688afe488be4b69ac8886ed04a80c93373b2f09d3b25d5c961da46a

Hex Analysis:

Size:	84 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 #1863662 Success

Packet Information

Payload Data

Decoded Data: