Packet #3934651

Database ID:	3934651
Mesh Packet ID:	`0x89575ebd` Used for correlation across gateways
Timestamp:	2025-07-17 03:05:58 UTC
From Node:	Morti Alto T3 (MRT3)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Alex (AMG)
Channel:	LongFast
RSSI:	-36 dBm
SNR:	7.25 dBm
Hop Info:	0/7 hops Start: 7, Limit: 7

Long Name:	Morti Alto T3
Short Name:	MRT3
Node ID:	!c1ed9c18
MAC Address:	70TB7ZwY
Hardware:	NRF52_PROMICRO_DIY

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:	76 bytes
Gateway:	!433ce0c8
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	Unknown / 7

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked
+ 1 more...

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
+ 2 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!433ce0c8` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (76 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3253574680` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`76` bytes	size
`hop_limit`	`7` Remaining hops allowed	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-36.0` dBm Signal strength at gateway	int32
`rx_snr`	`7.25` dB Signal quality at gateway	float
`rx_time`	`1752721557` 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`	`24` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1752721558.5917385` 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
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

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

MQTT-Specific Fields

Gateway ID:	`!433ce0c8`
Zero Hop Policy:	Enabled Direct gateway connection
Signal Metrics:	RSSI: -36.0 dBm SNR: 7.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	76 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!c1ed9c18", "long_name": "Morti Alto T3", "short_name": "MRT3", "macaddr": "70TB7ZwY", "hw_model": "NRF52_PROMICRO_DIY" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!433ce0c8", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3253574680, "to": 4294967295, "id": 2304204477, "rx_time": 1752721557, "rx_snr": 7.25, "rx_rssi": -36, "hop_limit": 7, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 24, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09216331656439633138120d4d6f72746920416c746f2054331a044d5254332206ef44c1ed9c18283f42205ff7881599140706a3c8e3f2e7c84f5e160445a0cb69c65c6748a61c00087356", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!c1ed9c18", "long_name": "Morti Alto T3", "short_name": "MRT3", "macaddr": "70TB7ZwY", "hw_model": "NRF52_PROMICRO_DIY", "public_key": "X/eIFZkUBwajyOPy58hPXhYERaDLacZcZ0imHAAIc1Y=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (76 bytes)

0a09216331656439633138120d4d6f72746920416c746f2054331a044d5254332206ef44c1ed9c18283f42205ff7881599140706a3c8e3f2e7c84f5e160445a0cb69c65c6748a61c00087356

Hex Analysis:

Size:	76 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 #3934651 Success

Packet Information

Payload Data

Decoded Data: