Packet #23013

Database ID:	23013
Mesh Packet ID:	`0x018f8154` Used for correlation across gateways
Timestamp:	2026-03-15 20:15:33 UTC
From Node:	Meowtastic 17f4 🐱 (17f4)
To Node:	Erdenhiem (🪬)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	SG-MediumFast (SGMF)
Channel:	LongFast
RSSI:	-17 dBm
SNR:	6.25 dBm
Hop Info:	2/2 hops Start: 2, Limit: 0
Relay Node:	`a3` SG-C Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Long Name:	Meowtastic 17f4 🐱
Short Name:	17f4
Node ID:	!924717f4
MAC Address:	yG2SRxf0
Hardware:	RAK4631

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:	87 bytes
Gateway:	!b29fa49c
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	2 / 2

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`	`!b29fa49c` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (87 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2454132724` Source node ID	uint32
`to`	`2177275937` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`87` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`2` Initial hop limit	uint32
`hops_taken`	`2` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-17.0` dBm Signal strength at gateway	int32
`rx_snr`	`6.25` dB Signal quality at gateway	float
`rx_time`	`1773605732` 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`	`163` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1773605733.321484` 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 (2 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!b29fa49c`
Signal Metrics:	RSSI: -17.0 dBm SNR: 6.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	87 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!924717f4", "long_name": "Meowtastic 17f4 🐱", "short_name": "17f4", "macaddr": "yG2SRxf0", "hw_model": "RAK4631" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!b29fa49c", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2454132724, "to": 2177275937, "id": 26181972, "rx_time": 1773605732, "rx_snr": 6.25, "rx_rssi": -17, "hop_limit": 0, "hop_start": 2, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 163, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a0921393234373137663412144d656f77746173746963203137663420f09f90b11a04313766342206c86d924717f42809380c422083a6d723ce8c50df9313e533e7ae6ee61e190d8d026ae6bf9ab675116fb503534801", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!924717f4", "long_name": "Meowtastic 17f4 🐱", "short_name": "17f4", "macaddr": "yG2SRxf0", "hw_model": "RAK4631", "role": "CLIENT_BASE", "public_key": "g6bXI86MUN+TE+Uz565u5h4ZDY0Caua/mrZ1EW+1A1M=", "is_unmessagable": true, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (87 bytes)

0a0921393234373137663412144d656f77746173746963203137663420f09f90b11a04313766342206c86d924717f42809380c422083a6d723ce8c50df9313e533e7ae6ee61e190d8d026ae6bf9ab675116fb503534801

Hex Analysis:

Size:	87 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 #23013 Success

Packet Information

Payload Data

Decoded Data: