Packet #3867586

Database ID:	3867586
Mesh Packet ID:	`0xea3954e2` Used for correlation across gateways
Timestamp:	2025-07-16 09:17:06 UTC
From Node:	Mastinzgz (6bb4)
To Node:	EA2EPS-1-CL-868-04b0 (EPS1)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	David📱🌐 (Dav)
Channel:	LongFast
RSSI:	-104 dBm
SNR:	0.25 dBm
Hop Info:	1/6 hops Start: 6, Limit: 5

Long Name:	Mastinzgz
Short Name:	6bb4
Node ID:	!a0cb6bb4
MAC Address:	MO2gy2u0
Hardware:	HELTEC_V3

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:	74 bytes
Gateway:	!db2b5be0
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	1 / 6

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`	`!db2b5be0` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (74 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2697685940` Source node ID	uint32
`to`	`1104348336` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`74` bytes	size
`hop_limit`	`5` Remaining hops allowed	uint32
`hop_start`	`6` Initial hop limit	uint32
`hops_taken`	`1` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-104.0` dBm Signal strength at gateway	int32
`rx_snr`	`0.25` dB Signal quality at gateway	float
`rx_time`	`1752657383` 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`	`90` Next hop node ID	uint32
`relay_node`	`144` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1752657426.4056942` 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 (1 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!db2b5be0`
Signal Metrics:	RSSI: -104.0 dBm SNR: 0.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	74 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!a0cb6bb4", "long_name": "Mastinzgz", "short_name": "6bb4", "macaddr": "MO2gy2u0", "hw_model": "HELTEC_V3" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!db2b5be0", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2697685940, "to": 1104348336, "id": 3929625826, "rx_time": 1752657383, "rx_snr": 0.25, "rx_rssi": -104, "hop_limit": 5, "hop_start": 6, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 90, "relay_node": 144, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a0921613063623662623412094d617374696e7a677a1a0436626234220630eda0cb6bb4282b422034c913c524d307323441fff65a2c6baa22d57a36aab11303b31bcbd5400bfd754800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!a0cb6bb4", "long_name": "Mastinzgz", "short_name": "6bb4", "macaddr": "MO2gy2u0", "hw_model": "HELTEC_V3", "public_key": "NMkTxSTTBzI0Qf/2WixrqiLVejaqsRMDsxvL1UAL/XU=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (74 bytes)

0a0921613063623662623412094d617374696e7a677a1a0436626234220630eda0cb6bb4282b422034c913c524d307323441fff65a2c6baa22d57a36aab11303b31bcbd5400bfd754800

Hex Analysis:

Size:	74 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 #3867586 Success

Packet Information

Payload Data

Decoded Data: