Packet #15375442

Database ID:	15375442
Mesh Packet ID:	`0x5e7d93bb` Used for correlation across gateways
Timestamp:	2026-04-11 23:30:38 UTC
From Node:	NIch2000 (NICH)
To Node:	Meshtastic 570c (570c)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Medved GW8 (MED8)
Channel:	LongFast
RSSI:	-100 dBm
SNR:	Unknown
Hop Info:	4/5 hops Start: 5, Limit: 1

Long Name:	NIch2000
Short Name:	NICH
Node ID:	!12dae673
MAC Address:	1mcS2uZz
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:	73 bytes
Gateway:	!fa68e0c0
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	4 / 5

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`	`!fa68e0c0` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (73 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`316335731` Source node ID	uint32
`to`	`49174284` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`73` bytes	size
`hop_limit`	`1` Remaining hops allowed	uint32
`hop_start`	`5` Initial hop limit	uint32
`hops_taken`	`4` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-100.0` dBm Signal strength at gateway	int32
`rx_snr`	Not set	float
`rx_time`	`1775939436` 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`	`204` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1775939438.5006487` 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:	`!fa68e0c0`
Signal Metrics:	RSSI: -100.0 dBm

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	73 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!12dae673", "long_name": "NIch2000", "short_name": "NICH", "macaddr": "1mcS2uZz", "hw_model": "T_ECHO" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!fa68e0c0", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 316335731, "to": 49174284, "id": 1585288123, "rx_time": 1775939436, "rx_snr": 0.0, "rx_rssi": -100, "hop_limit": 1, "hop_start": 5, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 204, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a0921313264616536373312084e496368323030301a044e4943482206d66712dae6732807422012c7966067f45de16aedd8264c7d333f868e22d409adf0e8495f750b8a52366d4800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!12dae673", "long_name": "NIch2000", "short_name": "NICH", "macaddr": "1mcS2uZz", "hw_model": "T_ECHO", "public_key": "EseWYGf0XeFq7dgmTH0zP4aOItQJrfDoSV91C4pSNm0=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (73 bytes)

0a0921313264616536373312084e496368323030301a044e4943482206d66712dae6732807422012c7966067f45de16aedd8264c7d333f868e22d409adf0e8495f750b8a52366d4800

Hex Analysis:

Size:	73 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 #15375442 Success

Packet Information

Payload Data

Decoded Data: