Packet #2861814

Database ID:	2861814
Mesh Packet ID:	`0x77adc3f1` Used for correlation across gateways
Timestamp:	2025-08-17 19:59:00 UTC
From Node:	Hatate (GSK0)
To Node:	Lingemeer Dak 🔌🏠 (LMDK)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Meshtastic 7c28 (7c28)
Channel:	LongFast
RSSI:	-138 dBm
SNR:	-17.0 dBm
Hop Info:	0/4 hops Start: 4, Limit: 4

Long Name:	Hatate
Short Name:	GSK0
Node ID:	!433e57b8
MAC Address:	SMpDPle4
Hardware:	HELTEC_V3

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:	69 bytes
Gateway:	!9ea67c28
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	Unknown / 4

Privacy Summary

Exposure Level:
Direct Message

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

Exposure Risks:
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
+ 1 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!9ea67c28` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (69 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`1128159160` Source node ID	uint32
`to`	`2733326572` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`69` bytes	size
`hop_limit`	`4` Remaining hops allowed	uint32
`hop_start`	`4` Initial hop limit	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-138.0` dBm Signal strength at gateway	int32
`rx_snr`	`-17.00` dB Signal quality at gateway	float
`rx_time`	`1755453394` 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`	Not set	uint32
`tx_after`	Not set	uint32
`timestamp`	`1755453540.4094625` 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
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!9ea67c28`
Zero Hop Policy:	Enabled Direct gateway connection
Signal Metrics:	RSSI: -138.0 dBm SNR: -17.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	69 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!433e57b8", "long_name": "Hatate", "short_name": "GSK0", "macaddr": "SMpDPle4", "hw_model": "HELTEC_V3" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!9ea67c28", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1128159160, "to": 2733326572, "id": 2007876593, "rx_time": 1755453394, "rx_snr": -17.0, "rx_rssi": -138, "hop_limit": 4, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 0, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a0921343333653537623812064861746174651a0447534b30220648ca433e57b8282b42200c4d09459fa43358ec9c7d05c74ed2c0482fd1e97c46019f4f6d3d9b8f429b37", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!433e57b8", "long_name": "Hatate", "short_name": "GSK0", "macaddr": "SMpDPle4", "hw_model": "HELTEC_V3", "public_key": "DE0JRZ+kM1jsnH0Fx07SwEgv0el8RgGfT209m49Cmzc=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (69 bytes)

0a0921343333653537623812064861746174651a0447534b30220648ca433e57b8282b42200c4d09459fa43358ec9c7d05c74ed2c0482fd1e97c46019f4f6d3d9b8f429b37

Hex Analysis:

Size:	69 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 #2861814 Success

Packet Information

Payload Data

Decoded Data: