Packet #1076351

Database ID:	1076351
Mesh Packet ID:	`0x8b568da6` Used for correlation across gateways
Timestamp:	2026-03-22 21:30:23 UTC
From Node:	Meshtastic b6ec (b6ec)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	RA4D_Base (VZV)
Channel:	LongFast
RSSI:	-116 dBm
SNR:	-20.0 dBm
Hop Info:	1/7 hops Start: 7, Limit: 6

Long Name:	Meshtastic b6ec
Short Name:	b6ec
Node ID:	!a0cab6ec
MAC Address:	MO2gyrbs
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:	80 bytes
Gateway:	!0acb5b38
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	1 / 7

Privacy Summary

Exposure Level:
Broadcast

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

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
+ 3 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!0acb5b38` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (80 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2697639660` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`80` bytes	size
`hop_limit`	`6` Remaining hops allowed	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`1` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-116.0` dBm Signal strength at gateway	int32
`rx_snr`	`-20.00` dB Signal quality at gateway	float
`rx_time`	`1774200635` 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`	`30` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1774200623.4163795` 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

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ 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:	`!0acb5b38`
Signal Metrics:	RSSI: -116.0 dBm SNR: -20.00 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": "!a0cab6ec", "long_name": "Meshtastic b6ec", "short_name": "b6ec", "macaddr": "MO2gyrbs", "hw_model": "HELTEC_V3" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!0acb5b38", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2697639660, "to": 4294967295, "id": 2337705382, "rx_time": 1774200635, "rx_snr": -20.0, "rx_rssi": -116, "hop_limit": 6, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 30, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09216130636162366563120f4d65736874617374696320623665631a0462366563220630eda0cab6ec282b422037f96b236cb9535849448329b109423dc3dd701582ad35e89bf51b53247325534800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!a0cab6ec", "long_name": "Meshtastic b6ec", "short_name": "b6ec", "macaddr": "MO2gyrbs", "hw_model": "HELTEC_V3", "public_key": "N/lrI2y5U1hJRIMpsQlCPcPdcBWCrTXom/UbUyRzJVM=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (80 bytes)

0a09216130636162366563120f4d65736874617374696320623665631a0462366563220630eda0cab6ec282b422037f96b236cb9535849448329b109423dc3dd701582ad35e89bf51b53247325534800

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 #1076351 Success

Packet Information

Payload Data

Decoded Data: