Packet #3224937

Database ID:	3224937
Mesh Packet ID:	`0x189c98e7` Used for correlation across gateways
Timestamp:	2025-07-09 16:08:09 UTC
From Node:	Sant_Cugat_Stationary 🗼 (FXSC)
To Node:	Migdia Relay (MiRe)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Cardedeu-GW-868 (GC)
Channel:	LongFast
RSSI:	-135 dBm
SNR:	-12.0 dBm
Hop Info:	3/3 hops Start: 3, Limit: 0

Long Name:	Sant_Cugat_Stationary 🗼
Short Name:	FXSC
Node ID:	!e8878839
MAC Address:	8nToh4g5
Hardware:	TRACKER_T1000_E

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:	91 bytes
Gateway:	!06f689ec
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	3 / 3

Privacy Summary

Exposure Level:
Direct Message

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 1 more...

Exposure Risks:
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
+ 2 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!06f689ec` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (91 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3901196345` Source node ID	uint32
`to`	`1129894564` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`91` 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`	`-135.0` dBm Signal strength at gateway	int32
`rx_snr`	`-12.00` dB Signal quality at gateway	float
`rx_time`	`1752077287` 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`	`204` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1752077289.41291` 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

Exposure Risks:

⚠ 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:	`!06f689ec`
Signal Metrics:	RSSI: -135.0 dBm SNR: -12.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	91 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!e8878839", "long_name": "Sant_Cugat_Stationary 🗼", "short_name": "FXSC", "macaddr": "8nToh4g5", "hw_model": "TRACKER_T1000_E" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!06f689ec", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3901196345, "to": 1129894564, "id": 412915943, "rx_time": 1752077287, "rx_snr": -12.0, "rx_rssi": -135, "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": 204, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09216538383738383339121a53616e745f43756761745f53746174696f6e61727920f09f97bc1a04465853432206f274e88788392847380142202d13b96171256aa8dcabb456821d1352e5b3e0fe5e656fb092ef357e84bd9716", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!e8878839", "long_name": "Sant_Cugat_Stationary 🗼", "short_name": "FXSC", "macaddr": "8nToh4g5", "hw_model": "TRACKER_T1000_E", "role": "CLIENT_MUTE", "public_key": "LRO5YXElaqjcq7RWgh0TUuWz4P5eZW+wku81foS9lxY=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (91 bytes)

0a09216538383738383339121a53616e745f43756761745f53746174696f6e61727920f09f97bc1a04465853432206f274e88788392847380142202d13b96171256aa8dcabb456821d1352e5b3e0fe5e656fb092ef357e84bd9716

Hex Analysis:

Size:	91 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 #3224937 Success

Packet Information

Payload Data

Decoded Data: