Packet #15742685

Database ID:	15742685
Mesh Packet ID:	`0x28b606c1` Used for correlation across gateways
Timestamp:	2026-04-15 18:56:17 UTC
From Node:	Meshtastic 8930 (8930)
To Node:	lion_repeater (ln_r)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Cyb (17e8)
Channel:	LongFast
RSSI:	-98 dBm
SNR:	-4.75 dBm
Hop Info:	2/4 hops Start: 4, Limit: 2

Long Name:	Meshtastic 8930
Short Name:	8930
Node ID:	!9ea08930
MAC Address:	nBOeoIkw
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:	82 bytes
Gateway:	!698517e8
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	2 / 4

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`	`!698517e8` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (82 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2661321008` Source node ID	uint32
`to`	`3663165308` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`82` bytes	size
`hop_limit`	`2` Remaining hops allowed	uint32
`hop_start`	`4` Initial hop limit	uint32
`hops_taken`	`2` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-98.0` dBm Signal strength at gateway	int32
`rx_snr`	`-4.75` dB Signal quality at gateway	float
`rx_time`	`1776268576` 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`	`56` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1776268577.544218` 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 (2 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!698517e8`
Signal Metrics:	RSSI: -98.0 dBm SNR: -4.75 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	82 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!9ea08930", "long_name": "Meshtastic 8930", "short_name": "8930", "macaddr": "nBOeoIkw", "hw_model": "HELTEC_V3" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!698517e8", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2661321008, "to": 3663165308, "id": 683017921, "rx_time": 1776268576, "rx_snr": -4.75, "rx_rssi": -98, "hop_limit": 2, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 56, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09213965613038393330120f4d65736874617374696320383933301a043839333022069c139ea08930282b3801422063c11c6fbbb93ce99d7c263f1bef3962c6e5907e451db000f6eb23c0a3b08d7a4800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!9ea08930", "long_name": "Meshtastic 8930", "short_name": "8930", "macaddr": "nBOeoIkw", "hw_model": "HELTEC_V3", "role": "CLIENT_MUTE", "public_key": "Y8Ecb7u5POmdfCY/G+85YsblkH5FHbAA9usjwKOwjXo=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (82 bytes)

0a09213965613038393330120f4d65736874617374696320383933301a043839333022069c139ea08930282b3801422063c11c6fbbb93ce99d7c263f1bef3962c6e5907e451db000f6eb23c0a3b08d7a4800

Hex Analysis:

Size:	82 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 #15742685 Success

Packet Information

Payload Data

Decoded Data: