Packet #537012

Database ID:	537012
Mesh Packet ID:	`0x25494fa1` Used for correlation across gateways
Timestamp:	2025-06-11 13:04:36 UTC
From Node:	Rast Portable 📟 (📟)
To Node:	!f4910287 (0287)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	RST Solar Base Test 📡 (RSBT)
Channel:	LongFast
RSSI:	-60 dBm
SNR:	-0.25 dBm
Hop Info:	0/3 hops Start: 3, Limit: 3

Long Name:	Rast portable 📟
Short Name:	Rst1
Node ID:	!849b7e00
MAC Address:	sIGEm34A
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:	81 bytes
Gateway:	!4d369cfd
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	Unknown / 3

Privacy Summary

Exposure Level:
Direct Message

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

Exposure Risks:
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
+ 1 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!4d369cfd` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (81 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2224782848` Source node ID	uint32
`to`	`4103144071` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`81` bytes	size
`hop_limit`	`3` Remaining hops allowed	uint32
`hop_start`	`3` Initial hop limit	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-60.0` dBm Signal strength at gateway	int32
`rx_snr`	`-0.25` dB Signal quality at gateway	float
`rx_time`	`1749647074` 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`	`255` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1749647076.8142028` 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
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!4d369cfd`
Zero Hop Policy:	Enabled Direct gateway connection
Signal Metrics:	RSSI: -60.0 dBm SNR: -0.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	81 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!849b7e00", "long_name": "Rast portable 📟", "short_name": "Rst1", "macaddr": "sIGEm34A", "hw_model": "HELTEC_V3" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!4d369cfd", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2224782848, "to": 4103144071, "id": 625561505, "rx_time": 1749647074, "rx_snr": -0.25, "rx_rssi": -60, "hop_limit": 3, "hop_start": 3, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 255, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a0921383439623765303012125261737420706f727461626c6520f09f939f1a04527374312206b081849b7e00282b42203506b4e4883bbd59625c7027d9dc436f1013da180e2fcc5ece5c3a246ee92b4d", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!849b7e00", "long_name": "Rast portable 📟", "short_name": "Rst1", "macaddr": "sIGEm34A", "hw_model": "HELTEC_V3", "public_key": "NQa05Ig7vVliXHAn2dxDbxAT2hgOL8xezlw6JG7pK00=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (81 bytes)

0a0921383439623765303012125261737420706f727461626c6520f09f939f1a04527374312206b081849b7e00282b42203506b4e4883bbd59625c7027d9dc436f1013da180e2fcc5ece5c3a246ee92b4d

Hex Analysis:

Size:	81 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 #537012 Success

Packet Information

Payload Data

Decoded Data: