Packet #173011

Database ID:	173011
Mesh Packet ID:	`0xc53c975c` Used for correlation across gateways
Timestamp:	2025-09-10 10:12:20 UTC
From Node:	SFBSRI72 LZ1S/r SWATbg 🇧🇬 🏠 (KILO)
To Node:	LX1XXL (M777)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	SFBSRI72 LZ1S/r SWATbg 🇧🇬 🏠 (KILO)
Channel:	Bulgaria
RSSI:	Unknown
SNR:	Unknown
Hop Info:	0/2 hops Start: 2, Limit: 2

Long Name:	SFBSRI72 LZ1S SWATbg 🇧🇬 🏠
Short Name:	KILO
Node ID:	!da63b8e8
MAC Address:	NLfaY7jo
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:	99 bytes
Gateway:	!da63b8e8
Channel:	Bulgaria
Payload Type:	NODEINFO_APP
Hop Count:	Unknown / 2

Privacy Summary

Exposure Level:
Direct Message

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 3 more...

Exposure Risks:
⚠ Packet visible to MQTT subscribers

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!da63b8e8` Node ID format
`channel_id`	`Bulgaria`
`packet`	`MeshPacket` (99 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3663968488` Source node ID	uint32
`to`	`237686442` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`99` bytes	size
`hop_limit`	`2` Remaining hops allowed	uint32
`hop_start`	`2` Initial hop limit	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	Not set	int32
`rx_snr`	Not set	float
`rx_time`	`1757488338` Receive timestamp	fixed32
`via_mqtt`	False Direct LoRa transmission	bool
`want_ack`	False No ACK requested	bool
`priority`	`10` Packet priority level	enum
`delayed`	Not set	enum
`channel`	Not set	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	Not set	uint32
`relay_node`	`232` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1757488340.7081082` 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: Bulgaria
✓ Gateway node ID tracked
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

⚠ Packet visible to MQTT subscribers

MQTT-Specific Fields

Gateway ID:	`!da63b8e8`
Zero Hop Policy:	Enabled Direct gateway connection

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	99 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!da63b8e8", "long_name": "SFBSRI72 LZ1S SWATbg 🇧🇬 🏠", "short_name": "KILO", "macaddr": "NLfaY7jo", "hw_model": "HELTEC_V3" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!da63b8e8", "channel_id": "Bulgaria", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3663968488, "to": 237686442, "id": 3309082460, "rx_time": 1757488338, "rx_snr": 0.0, "rx_rssi": 0, "hop_limit": 2, "hop_start": 2, "via_mqtt": 0, "want_ack": 0, "priority": 10, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 232, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a0921646136336238653812225346425352493732204c5a31532053574154626720f09f87a7f09f87ac20f09f8fa01a044b494c4f220634b7da63b8e8282b380b422047315d55b8b5a03eef89a10f95b0c18d12193c989c1130f49ebf699b411b271b", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!da63b8e8", "long_name": "SFBSRI72 LZ1S SWATbg 🇧🇬 🏠", "short_name": "KILO", "macaddr": "NLfaY7jo", "hw_model": "HELTEC_V3", "role": "ROUTER_LATE", "public_key": "RzFdVbi1oD7viaEPlbDBjRIZPJicETD0nr9pm0EbJxs=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (99 bytes)

0a0921646136336238653812225346425352493732204c5a31532053574154626720f09f87a7f09f87ac20f09f8fa01a044b494c4f220634b7da63b8e8282b380b422047315d55b8b5a03eef89a10f95b0c18d12193c989c1130f49ebf699b411b271b

Hex Analysis:

Size:	99 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 #173011 Success

Packet Information

Payload Data

Decoded Data: