Packet #28235236

Database ID:	28235236
Mesh Packet ID:	`0x7180f0f5` Used for correlation across gateways
Timestamp:	2025-12-17 08:57:52 UTC
From Node:	MLL_TEchoW_PY (TEWY)
To Node:	!13350894 (0894)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	EA9-ML-001📡🌞🌐 (ML01)
Channel:	LongFast
RSSI:	-102 dBm
SNR:	-13.25 dBm
Hop Info:	1/4 hops Start: 4, Limit: 3
Relay Node:	`e4` ML81 , ML03 Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Long Name:	MLL_TEchoW_PY
Short Name:	TEWY
Node ID:	!4dd870c6
MAC Address:	3eBN2HDG
Hardware:	T_ECHO

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:	!435a8c38
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	1 / 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`	`!435a8c38` 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`	`1306030278` Source node ID	uint32
`to`	`322242708` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`80` bytes	size
`hop_limit`	`3` Remaining hops allowed	uint32
`hop_start`	`4` Initial hop limit	uint32
`hops_taken`	`1` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-102.0` dBm Signal strength at gateway	int32
`rx_snr`	`-13.25` dB Signal quality at gateway	float
`rx_time`	`1765961871` 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`	`228` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1765961872.948268` 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 (1 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!435a8c38`
Signal Metrics:	RSSI: -102.0 dBm SNR: -13.25 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": "!4dd870c6", "long_name": "MLL_TEchoW_PY", "short_name": "TEWY", "macaddr": "3eBN2HDG", "hw_model": "T_ECHO" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!435a8c38", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1306030278, "to": 322242708, "id": 1904275701, "rx_time": 1765961871, "rx_snr": -13.25, "rx_rssi": -102, "hop_limit": 3, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 228, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09213464643837306336120d4d4c4c5f544563686f575f50591a04544557592206dde04dd870c62807380142209b00dec493ebae5eced4051be2477e347b831e1fb9f4150d31741d63765f7e724800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!4dd870c6", "long_name": "MLL_TEchoW_PY", "short_name": "TEWY", "macaddr": "3eBN2HDG", "hw_model": "T_ECHO", "role": "CLIENT_MUTE", "public_key": "mwDexJPrrl7O1AUb4kd+NHuDHh+59BUNMXQdY3ZffnI=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (80 bytes)

0a09213464643837306336120d4d4c4c5f544563686f575f50591a04544557592206dde04dd870c62807380142209b00dec493ebae5eced4051be2477e347b831e1fb9f4150d31741d63765f7e724800

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 #28235236 Success

Packet Information

Payload Data

Decoded Data: