Packet #11083877

Database ID:	11083877
Mesh Packet ID:	`0xf3c9e9da` Used for correlation across gateways
Timestamp:	2025-09-18 03:02:20 UTC
From Node:	EA5JSQ pruebas (JSQP)
To Node:	NarKeTsT (NKTS)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	San_Pablo🗼 (SP00)
Channel:	LongFast
RSSI:	-44 dBm
SNR:	6.0 dBm
Hop Info:	1/3 hops Start: 3, Limit: 2

Long Name:	EA5JSQ pruebas
Short Name:	JSQP
Node ID:	!7c8dc208
MAC Address:	wFt8jcII
Hardware:	NRF52_PROMICRO_DIY

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:	!db2b5848
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	1 / 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`	`!db2b5848` 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`	`2089665032` Source node ID	uint32
`to`	`1509040717` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`81` bytes	size
`hop_limit`	`2` Remaining hops allowed	uint32
`hop_start`	`3` Initial hop limit	uint32
`hops_taken`	`1` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-44.0` dBm Signal strength at gateway	int32
`rx_snr`	`6.00` dB Signal quality at gateway	float
`rx_time`	`1758164539` 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`	`196` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1758164540.085764` 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:	`!db2b5848`
Signal Metrics:	RSSI: -44.0 dBm SNR: 6.00 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": "!7c8dc208", "long_name": "EA5JSQ pruebas", "short_name": "JSQP", "macaddr": "wFt8jcII", "hw_model": "NRF52_PROMICRO_DIY" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!db2b5848", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2089665032, "to": 1509040717, "id": 4090096090, "rx_time": 1758164539, "rx_snr": 6.0, "rx_rssi": -44, "hop_limit": 2, "hop_start": 3, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 196, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09213763386463323038120e4541354a535120707275656261731a044a5351502206c05b7c8dc208283f38014220963ac51d09786f047f70c8952853d5cdcd5187e6a4456e20198404aab6aeb87e4800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!7c8dc208", "long_name": "EA5JSQ pruebas", "short_name": "JSQP", "macaddr": "wFt8jcII", "hw_model": "NRF52_PROMICRO_DIY", "role": "CLIENT_MUTE", "public_key": "ljrFHQl4bwR/cMiVKFPVzc1Rh+akRW4gGYQEqrauuH4=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (81 bytes)

0a09213763386463323038120e4541354a535120707275656261731a044a5351502206c05b7c8dc208283f38014220963ac51d09786f047f70c8952853d5cdcd5187e6a4456e20198404aab6aeb87e4800

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 #11083877 Success

Packet Information

Payload Data

Decoded Data: