Packet #14946409

Database ID:	14946409
Mesh Packet ID:	`0x75e7bd98` Used for correlation across gateways
Timestamp:	2026-04-07 21:30:45 UTC
From Node:	LasT 3e9c (3e9c)
To Node:	Saturn5064 (s064)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Keyhost GW8 (KHS8)
Channel:	LongFast
RSSI:	-115 dBm
SNR:	-12.5 dBm
Hop Info:	7/7 hops Start: 7, Limit: 0

Long Name:	LasT 3e9c
Short Name:	3e9c
Node ID:	!f6623e9c
MAC Address:	RBv2Yj6c
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:	74 bytes
Gateway:	!fa98ccfc
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`	`!fa98ccfc` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (74 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`4133633692` Source node ID	uint32
`to`	`1236619364` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`74` 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`	`-115.0` dBm Signal strength at gateway	int32
`rx_snr`	`-12.50` dB Signal quality at gateway	float
`rx_time`	`1775586441` 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`	`1775586645.3520179` 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:	`!fa98ccfc`
Signal Metrics:	RSSI: -115.0 dBm SNR: -12.50 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	74 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!f6623e9c", "long_name": "LasT 3e9c", "short_name": "3e9c", "macaddr": "RBv2Yj6c", "hw_model": "HELTEC_V4" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!fa98ccfc", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 4133633692, "to": 1236619364, "id": 1978121624, "rx_time": 1775586441, "rx_snr": -12.5, "rx_rssi": -115, "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": 0, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a0921663636323365396312094c61735420336539631a04336539632206441bf6623e9c286e422090d6d460dfc0315ac23c1fa510ff5a80d9da0ee1ca2f8d7ec482c18ec1672e3d4800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!f6623e9c", "long_name": "LasT 3e9c", "short_name": "3e9c", "macaddr": "RBv2Yj6c", "hw_model": "HELTEC_V4", "public_key": "kNbUYN/AMVrCPB+lEP9agNnaDuHKL41+xILBjsFnLj0=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (74 bytes)

0a0921663636323365396312094c61735420336539631a04336539632206441bf6623e9c286e422090d6d460dfc0315ac23c1fa510ff5a80d9da0ee1ca2f8d7ec482c18ec1672e3d4800

Hex Analysis:

Size:	74 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 #14946409 Success

Packet Information

Payload Data

Decoded Data: