Packet #18385867

Packet Information

Database ID:	18385867
Mesh Packet ID:	`0x5bc63719` Used for correlation across gateways
Timestamp:	2026-06-10 03:13:59 UTC
From Node:	Alexander Podolsk E213 (alex)
To Node:	!bb8323a4 (23a4)
Success:	Failed
Protocol:	NODEINFO_APP Port: 4

Gateway:	SYSXX YGW8 (SXY8)
Channel:	MediumFast
RSSI:	Unknown
SNR:	10.75 dBm
Hop Info:	7/7 hops Start: 7, Limit: 0

Payload Data

Protocol: NODEINFO_APP

Size: 87 bytes

Decoded: No

User decode error: Error parsing message with type 'meshtastic.protobuf.User'

Text Content:

0a092134656463616430631216416c6578616e64657220506f646f6c736b20453231332a07615f6572220a80b54edcad05284f422c4ba987a8d59e75235234c8bc22fe76eea1ee839c73ada32849bf28ecf6a958404800

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:	87 bytes
Gateway:	!efffff02
Channel:	MediumFast
Payload Type:	NODEINFO_APP
Hop Count:	7 / 7

Privacy Summary

Exposure Level:
Direct Message

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

Exposure Risks:
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (7 hops)
+ 1 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!efffff02` Node ID format
`channel_id`	`MediumFast`
`packet`	`MeshPacket` (87 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`1323085068` Source node ID	uint32
`to`	`3145933732` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`87` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`7` Calculated: hop_start - hop_limit	derived
`rx_rssi`	Not set	int32
`rx_snr`	`10.75` dB Signal quality at gateway	float
`rx_time`	`1781050439` 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`	`8` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1781050439.8170455` 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
✓ Custom channel: MediumFast
✓ Gateway node ID tracked

Exposure Risks:

⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (7 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!efffff02`
Signal Metrics:	SNR: 10.75 dB

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!efffff02", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1323085068, "to": 3145933732, "id": 1539716889, "rx_time": 1781050439, "rx_snr": 10.75, "rx_rssi": 0, "hop_limit": 0, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 8, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a092134656463616430631216416c6578616e64657220506f646f6c736b20453231332a07615f6572220a80b54edcad05284f422c4ba987a8d59e75235234c8bc22fe76eea1ee839c73ada32849bf28ecf6a958404800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "raw_bytes": "0a092134656463616430631216416c6578616e64657220506f646f6c736b20453231332a07615f6572220a80b54edcad05284f422c4ba987a8d59e75235234c8bc22fe76eea1ee839c73ada32849bf28ecf6a958404800", "type": "decode_error", "portnum": "NODEINFO_APP", "decode_error": "User decode error: Error parsing message with type 'meshtastic.protobuf.User'" } } } }

Raw Packet Data (87 bytes)