Packet #2338914

Database ID:	2338914
Mesh Packet ID:	`0xe87c8806` Used for correlation across gateways
Timestamp:	2025-08-14 01:31:29 UTC
From Node:	Remo 📟 (a47f)
To Node:	Cor Heltec ePaper V1.1 (GLB3)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Soesterduinen🔌 🌐 🛰️ (🌲)
Channel:	LongFast
RSSI:	-127 dBm
SNR:	-19.25 dBm
Hop Info:	2/3 hops Start: 3, Limit: 1

Long Name:	Remo 📟
Short Name:	a47f
Node ID:	!c3b4a47f
MAC Address:	zcTDtKR/
Hardware:	TRACKER_T1000_E

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:	76 bytes
Gateway:	!da6575fc
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	2 / 3

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`	`!da6575fc` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (76 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3283395711` Source node ID	uint32
`to`	`862425396` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`76` bytes	size
`hop_limit`	`1` Remaining hops allowed	uint32
`hop_start`	`3` Initial hop limit	uint32
`hops_taken`	`2` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-127.0` dBm Signal strength at gateway	int32
`rx_snr`	`-19.25` dB Signal quality at gateway	float
`rx_time`	`1755127877` 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`	Not set	uint32
`tx_after`	Not set	uint32
`timestamp`	`1755127889.0062363` 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:	`!da6575fc`
Signal Metrics:	RSSI: -127.0 dBm SNR: -19.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	76 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!c3b4a47f", "long_name": "Remo 📟", "short_name": "a47f", "macaddr": "zcTDtKR/", "hw_model": "TRACKER_T1000_E" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!da6575fc", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3283395711, "to": 862425396, "id": 3900475398, "rx_time": 1755127877, "rx_snr": -19.25, "rx_rssi": -127, "hop_limit": 1, "hop_start": 3, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 0, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09216333623461343766120952656d6f20f09f939f1a04613437662206cdc4c3b4a47f28473801422086d8578cdcd1f0537280eb3c9296a2c99a5d7d06fa7ec6531aea6d4f5803f5484800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!c3b4a47f", "long_name": "Remo 📟", "short_name": "a47f", "macaddr": "zcTDtKR/", "hw_model": "TRACKER_T1000_E", "role": "CLIENT_MUTE", "public_key": "hthXjNzR8FNygOs8kpaiyZpdfQb6fsZTGuptT1gD9Ug=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (76 bytes)

0a09216333623461343766120952656d6f20f09f939f1a04613437662206cdc4c3b4a47f28473801422086d8578cdcd1f0537280eb3c9296a2c99a5d7d06fa7ec6531aea6d4f5803f5484800

Hex Analysis:

Size:	76 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 #2338914 Success

Packet Information

Payload Data

Decoded Data: