Packet #3878603

Database ID:	3878603
Mesh Packet ID:	`0xb4eb2e7a` Used for correlation across gateways
Timestamp:	2025-07-16 12:25:07 UTC
From Node:	Meshtastic_359f (359f)
To Node:	Meshtastic a3e8 (a3e8)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	minWitastic fijo 🔇🔕 (mnwF)
Channel:	MediumSlow
RSSI:	-106 dBm
SNR:	-17.0 dBm
Hop Info:	1/5 hops Start: 5, Limit: 4

Long Name:	Meshtastic_359f
Short Name:	359f
Node ID:	!072e359f
MAC Address:	7O0HLjWf
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:	80 bytes
Gateway:	!47c9ba13
Channel:	MediumSlow
Payload Type:	NODEINFO_APP
Hop Count:	1 / 5

Privacy Summary

Exposure Level:
Direct Message

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 2 more...

Exposure Risks:
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (1 hops)
+ 1 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!47c9ba13` Node ID format
`channel_id`	`MediumSlow`
`packet`	`MeshPacket` (80 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`120468895` Source node ID	uint32
`to`	`2224792552` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`80` bytes	size
`hop_limit`	`4` Remaining hops allowed	uint32
`hop_start`	`5` Initial hop limit	uint32
`hops_taken`	`1` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-106.0` dBm Signal strength at gateway	int32
`rx_snr`	`-17.00` dB Signal quality at gateway	float
`rx_time`	`1752668705` 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`	`19` Next hop node ID	uint32
`relay_node`	`96` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1752668707.2784777` 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
✓ Custom channel: MediumSlow
✓ Gateway node ID tracked

Exposure Risks:

⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (1 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!47c9ba13`
Signal Metrics:	RSSI: -106.0 dBm SNR: -17.00 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": "!072e359f", "long_name": "Meshtastic_359f", "short_name": "359f", "macaddr": "7O0HLjWf", "hw_model": "NRF52_PROMICRO_DIY" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!47c9ba13", "channel_id": "MediumSlow", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 120468895, "to": 2224792552, "id": 3035311738, "rx_time": 1752668705, "rx_snr": -17.0, "rx_rssi": -106, "hop_limit": 4, "hop_start": 5, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 19, "relay_node": 96, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09213037326533353966120f4d6573687461737469635f333539661a04333539662206eced072e359f283f42208d6facc48a6247c4042992f37fc4ed748bac793e6c2dcc1a46c2c4d795de6c664801", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!072e359f", "long_name": "Meshtastic_359f", "short_name": "359f", "macaddr": "7O0HLjWf", "hw_model": "NRF52_PROMICRO_DIY", "public_key": "jW+sxIpiR8QEKZLzf8TtdIuseT5sLcwaRsLE15XebGY=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (80 bytes)

0a09213037326533353966120f4d6573687461737469635f333539661a04333539662206eced072e359f283f42208d6facc48a6247c4042992f37fc4ed748bac793e6c2dcc1a46c2c4d795de6c664801

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 #3878603 Success

Packet Information

Payload Data

Decoded Data: