Packet #3036957

Database ID:	3036957
Mesh Packet ID:	`0x11918c76` Used for correlation across gateways
Timestamp:	2026-03-20 21:52:48 UTC
From Node:	EA7LGA-CM-8-M1 (2LGA)
To Node:	CT7BRA 💻 TKSU-CL-8 (TKSU)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	EA7LGA-868/T1 (8LGA)
Channel:	LongFast
RSSI:	-22 dBm
SNR:	6.0 dBm
Hop Info:	0/4 hops Start: 4, Limit: 4

Long Name:	EA7LGA-CM-8-M1
Short Name:	2LGA
Node ID:	!ea067a9c
MAC Address:	jL/qBnqc
Hardware:	T_DECK

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:	79 bytes
Gateway:	!1354d32d
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	Unknown / 4

Privacy Summary

Exposure Level:
Direct Message

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 2 more...

Exposure Risks:
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
+ 1 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!1354d32d` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (79 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3926293148` Source node ID	uint32
`to`	`614199549` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`79` bytes	size
`hop_limit`	`4` Remaining hops allowed	uint32
`hop_start`	`4` Initial hop limit	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-22.0` dBm Signal strength at gateway	int32
`rx_snr`	`6.00` dB Signal quality at gateway	float
`rx_time`	`1774043551` 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`	`156` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1774043568.7423658` 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
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!1354d32d`
Zero Hop Policy:	Enabled Direct gateway connection
Signal Metrics:	RSSI: -22.0 dBm SNR: 6.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	79 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!ea067a9c", "long_name": "EA7LGA-CM-8-M1", "short_name": "2LGA", "macaddr": "jL/qBnqc", "hw_model": "T_DECK" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!1354d32d", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3926293148, "to": 614199549, "id": 294751350, "rx_time": 1774043551, "rx_snr": 6.0, "rx_rssi": -22, "hop_limit": 4, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 156, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09216561303637613963120e4541374c47412d434d2d382d4d311a04324c474122068cbfea067a9c28324220b1976dc02cd6bd84c64234fbd4b613e42df6828104f6a88c05f5f3655f21333b4800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!ea067a9c", "long_name": "EA7LGA-CM-8-M1", "short_name": "2LGA", "macaddr": "jL/qBnqc", "hw_model": "T_DECK", "public_key": "sZdtwCzWvYTGQjT71LYT5C32goEE9qiMBfXzZV8hMzs=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (79 bytes)

0a09216561303637613963120e4541374c47412d434d2d382d4d311a04324c474122068cbfea067a9c28324220b1976dc02cd6bd84c64234fbd4b613e42df6828104f6a88c05f5f3655f21333b4800

Hex Analysis:

Size:	79 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 #3036957 Success

Packet Information

Payload Data

Decoded Data: