Packet #75627

Database ID:	75627
Mesh Packet ID:	`0xd6dda33b` Used for correlation across gateways
Timestamp:	2026-03-15 05:31:21 Саратов/Балаково (UTC+4)
From Node:	Головановский (GLV)
To Node:	!452f3561 (3561)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	chem (721c)
Channel:	LongFast
RSSI:	-97 dBm
SNR:	4.5 dBm
Hop Info:	7/7 hops Start: 7, Limit: 0

Long Name:	Головановский
Short Name:	GLV
Node ID:	!779d62aa
MAC Address:	iFamli9k
Hardware:	HELTEC_V4

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:	92 bytes
Gateway:	!9e78721c
Channel:	LongFast
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
+ 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`	`!9e78721c` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (92 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2006803114` Source node ID	uint32
`to`	`1160721761` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`92` 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`	`-97.0` dBm Signal strength at gateway	int32
`rx_snr`	`4.50` dB Signal quality at gateway	float
`rx_time`	`1773538281` 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`	`2` Channel index	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	Not set	uint32
`relay_node`	`248` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`2026-03-15 04:31:21.662777+03:00` 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 (7 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!9e78721c`
Signal Metrics:	RSSI: -97.0 dBm SNR: 4.50 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	92 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!779d62aa", "long_name": "Головановский", "short_name": "GLV", "macaddr": "iFamli9k", "hw_model": "HELTEC_V4" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!9e78721c", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2006803114, "to": 1160721761, "id": 3604849467, "rx_time": 1773538281, "rx_snr": 4.5, "rx_rssi": -97, "hop_limit": 0, "hop_start": 7, "via_mqtt": false, "want_ack": false, "priority": 0, "delayed": 0, "channel_index": 2, "pki_encrypted": false, "next_hop": 0, "relay_node": 248, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09213737396436326161121ad093d0bed0bbd0bed0b2d0b0d0bdd0bed0b2d181d0bad0b8d0b91a03474c5622068856a6962f64286e380b4220d5db5fbd52bc153d3507f762716ffdf330c37a414175f56cb7f909f9a242356d4800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!779d62aa", "long_name": "Головановский", "short_name": "GLV", "macaddr": "iFamli9k", "hw_model": "HELTEC_V4", "role": "ROUTER_LATE", "public_key": "1dtfvVK8FT01B/dicW/98zDDekFBdfVst/kJ+aJCNW0=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (92 bytes)

0a09213737396436326161121ad093d0bed0bbd0bed0b2d0b0d0bdd0bed0b2d181d0bad0b8d0b91a03474c5622068856a6962f64286e380b4220d5db5fbd52bc153d3507f762716ffdf330c37a414175f56cb7f909f9a242356d4800

Hex Analysis:

Size:	92 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 #75627 Success

Packet Information

Payload Data

Decoded Data: