Packet #1557022

Database ID:	1557022
Mesh Packet ID:	`0x294b04d2` Used for correlation across gateways
Timestamp:	2026-06-02 16:01:39 UTC
From Node:	ZN Alto LF (ALLF)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Six Feet Over - MF (SFO)
Channel:	LongFast
RSSI:	-104 dBm
SNR:	-1.5 dBm
Hop Info:	3/3 hops Start: 3, Limit: 0
Relay Node:	`b5` FIVE Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Long Name:	ZN Alto LF
Short Name:	ALLF
Node ID:	!c46605cf
MAC Address:	fEvEZgXP
Hardware:	PORTDUINO

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:	77 bytes
Gateway:	!db2b13f8
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	3 / 3

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`	`!db2b13f8` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (77 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3295020495` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`77` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`3` Initial hop limit	uint32
`hops_taken`	`3` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-104.0` dBm Signal strength at gateway	int32
`rx_snr`	`-1.50` dB Signal quality at gateway	float
`rx_time`	`1780416098` 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`	`181` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1780416099.6826048` 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 (3 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!db2b13f8`
Signal Metrics:	RSSI: -104.0 dBm SNR: -1.50 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	77 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!c46605cf", "long_name": "ZN Alto LF", "short_name": "ALLF", "macaddr": "fEvEZgXP", "hw_model": "PORTDUINO" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!db2b13f8", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3295020495, "to": 4294967295, "id": 692782290, "rx_time": 1780416098, "rx_snr": -1.5, "rx_rssi": -104, "hop_limit": 0, "hop_start": 3, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 181, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09216334363630356366120a5a4e20416c746f204c461a04414c4c4622067c4bc46605cf2825380b4220fd0b5ab5826d79ceec9e362db172ca1d405378ebe95f698139e13e6a25bff03b4801", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!c46605cf", "long_name": "ZN Alto LF", "short_name": "ALLF", "macaddr": "fEvEZgXP", "hw_model": "PORTDUINO", "role": "ROUTER_LATE", "public_key": "/QtatYJtec7snjYtsXLKHUBTeOvpX2mBOeE+aiW/8Ds=", "is_unmessagable": true, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (77 bytes)

0a09216334363630356366120a5a4e20416c746f204c461a04414c4c4622067c4bc46605cf2825380b4220fd0b5ab5826d79ceec9e362db172ca1d405378ebe95f698139e13e6a25bff03b4801

Hex Analysis:

Size:	77 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 #1557022 Success

Packet Information

Payload Data

Decoded Data: