Packet #3902864

Database ID:	3902864
Mesh Packet ID:	`0x1de03928` Used for correlation across gateways
Timestamp:	2025-07-16 18:30:01 UTC
From Node:	Mamotreto (Mmtr)
To Node:	!ba6062d4 (62d4)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	EA7-CA-015_Chiclana☀️ (575c)
Channel:	LongFast
RSSI:	-121 dBm
SNR:	-12.75 dBm
Hop Info:	4/4 hops Start: 4, Limit: 0

Long Name:	Mamotreto
Short Name:	Mmtr
Node ID:	!ea8f83c4
MAC Address:	jL/qj4PE
Hardware:	SEEED_XIAO_S3

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:	72 bytes
Gateway:	!1570575c
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	4 / 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`	`!1570575c` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (72 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3935273924` Source node ID	uint32
`to`	`3126878932` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`72` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`4` Initial hop limit	uint32
`hops_taken`	`4` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-121.0` dBm Signal strength at gateway	int32
`rx_snr`	`-12.75` dB Signal quality at gateway	float
`rx_time`	`1752791277` 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`	`184` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1752690601.3127444` 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 (4 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!1570575c`
Signal Metrics:	RSSI: -121.0 dBm SNR: -12.75 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	72 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!ea8f83c4", "long_name": "Mamotreto", "short_name": "Mmtr", "macaddr": "jL/qj4PE", "hw_model": "SEEED_XIAO_S3" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!1570575c", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3935273924, "to": 3126878932, "id": 501233960, "rx_time": 1752791277, "rx_snr": -12.75, "rx_rssi": -121, "hop_limit": 0, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 184, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a0921656138663833633412094d616d6f747265746f1a044d6d747222068cbfea8f83c4285142208436221e473016435d4dc21264881ed0f0996ab9ee10045d4091e45d24668a34", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!ea8f83c4", "long_name": "Mamotreto", "short_name": "Mmtr", "macaddr": "jL/qj4PE", "hw_model": "SEEED_XIAO_S3", "public_key": "hDYiHkcwFkNdTcISZIge0PCZarnuEARdQJHkXSRmijQ=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (72 bytes)

0a0921656138663833633412094d616d6f747265746f1a044d6d747222068cbfea8f83c4285142208436221e473016435d4dc21264881ed0f0996ab9ee10045d4091e45d24668a34

Hex Analysis:

Size:	72 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 #3902864 Success

Packet Information

Payload Data

Decoded Data: