Packet #486414

Database ID:	486414
Mesh Packet ID:	`0x742217b2` Used for correlation across gateways
Timestamp:	2026-03-27 20:13:01 UTC
From Node:	Zvn (d888)
To Node:	Gena the Croc (GtC0)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	q00_Repeater (q00)
Channel:	LongFast
RSSI:	-93 dBm
SNR:	9.5 dBm
Hop Info:	4/7 hops Start: 7, Limit: 3

Long Name:	Zvn
Short Name:	Zvn
Node ID:	!0407d888
MAC Address:	rKcEB9iI
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:	67 bytes
Gateway:	!8488730c
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	4 / 7

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`	`!8488730c` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (67 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`67623048` Source node ID	uint32
`to`	`1770351704` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`67` bytes	size
`hop_limit`	`3` Remaining hops allowed	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`4` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-93.0` dBm Signal strength at gateway	int32
`rx_snr`	`9.50` dB Signal quality at gateway	float
`rx_time`	`1774631580` 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`	`1774631581.8359048` 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 (4 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!8488730c`
Signal Metrics:	RSSI: -93.0 dBm SNR: 9.50 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	67 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!0407d888", "long_name": "Zvn", "short_name": "Zvn", "macaddr": "rKcEB9iI", "hw_model": "HELTEC_V3" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!8488730c", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 67623048, "to": 1770351704, "id": 1948391346, "rx_time": 1774631580, "rx_snr": 9.5, "rx_rssi": -93, "hop_limit": 3, "hop_start": 7, "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": "0a0921303430376438383812035a766e1a035a766e2206aca70407d888282b42200559349f307d7964f0244556cdd02156ead3b3ab71a3bd0eba4b5fd8e9a35e514800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!0407d888", "long_name": "Zvn", "short_name": "Zvn", "macaddr": "rKcEB9iI", "hw_model": "HELTEC_V3", "public_key": "BVk0nzB9eWTwJEVWzdAhVurTs6txo70Ouktf2OmjXlE=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (67 bytes)

0a0921303430376438383812035a766e1a035a766e2206aca70407d888282b42200559349f307d7964f0244556cdd02156ead3b3ab71a3bd0eba4b5fd8e9a35e514800

Hex Analysis:

Size:	67 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 #486414 Success

Packet Information

Payload Data

Decoded Data: