Packet #28125623

Database ID:	28125623
Mesh Packet ID:	`0xc000fe4b` Used for correlation across gateways
Timestamp:	2025-12-16 20:47:28 UTC
From Node:	router light golf (RLG)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	EB5JHT BASE (JHT2)
Channel:	LongFast
RSSI:	-117 dBm
SNR:	-8.5 dBm
Hop Info:	2/5 hops Start: 5, Limit: 3
Relay Node:	`86` RUCD Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Long Name:	router light golf
Short Name:	RLG
Node ID:	!55410c64
MAC Address:	+y5VQQxk
Hardware:	M5STACK_RESERVED

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:	83 bytes
Gateway:	!186fb834
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	2 / 5

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
+ 3 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!186fb834` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (83 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`1430326372` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`83` bytes	size
`hop_limit`	`3` Remaining hops allowed	uint32
`hop_start`	`5` Initial hop limit	uint32
`hops_taken`	`2` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-117.0` dBm Signal strength at gateway	int32
`rx_snr`	`-8.50` dB Signal quality at gateway	float
`rx_time`	`1765918031` 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`	`134` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1765918048.7458017` Unix timestamp	uint32

MQTT Privacy & Exposure Analysis

Analysis of privacy features and exposure risks when packet is shared via MQTT

Exposure Level: Broadcast

Privacy Features:

✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ 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:	`!186fb834`
Signal Metrics:	RSSI: -117.0 dBm SNR: -8.50 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	83 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!55410c64", "long_name": "router light golf", "short_name": "RLG", "macaddr": "+y5VQQxk", "hw_model": "M5STACK_RESERVED" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!186fb834", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1430326372, "to": 4294967295, "id": 3221290571, "rx_time": 1765918031, "rx_snr": -8.5, "rx_rssi": -117, "hop_limit": 3, "hop_start": 5, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 134, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a092135353431306336341211726f75746572206c6967687420676f6c661a03524c472206fb2e55410c64286838024220ed5f6a70195956c55606b2df4d9a8e9f52e48c824f11bdd7050d93f513668f104801", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!55410c64", "long_name": "router light golf", "short_name": "RLG", "macaddr": "+y5VQQxk", "hw_model": "M5STACK_RESERVED", "role": "ROUTER", "public_key": "7V9qcBlZVsVWBrLfTZqOn1LkjIJPEb3XBQ2T9RNmjxA=", "is_unmessagable": true, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (83 bytes)

0a092135353431306336341211726f75746572206c6967687420676f6c661a03524c472206fb2e55410c64286838024220ed5f6a70195956c55606b2df4d9a8e9f52e48c824f11bdd7050d93f513668f104801

Hex Analysis:

Size:	83 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 #28125623 Success

Packet Information

Payload Data

Decoded Data: