Packet #1021278

Database ID:	1021278
Mesh Packet ID:	`0xb62b6e3c` Used for correlation across gateways
Timestamp:	2025-10-20 15:13:33 UTC
From Node:	Meshtastic 3F20 (3F20)
To Node:	!e2e25790 (5790)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	PizzaDeliveryDude \| nyme.sh (PDD0)
Channel:	LongFast
RSSI:	-128 dBm
SNR:	-17.25 dBm
Hop Info:	1/3 hops Start: 3, Limit: 2
Relay Node:	None

Long Name:	Meshtastic 3F20
Short Name:	3F20
Node ID:	!abf83f20
MAC Address:	JGKr+D8g
Hardware:	TBEAM

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:	78 bytes
Gateway:	!0283d63d
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	1 / 3

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`	`!0283d63d` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (78 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2885173024` Source node ID	uint32
`to`	`3806484368` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`78` bytes	size
`hop_limit`	`2` Remaining hops allowed	uint32
`hop_start`	`3` Initial hop limit	uint32
`hops_taken`	`1` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-128.0` dBm Signal strength at gateway	int32
`rx_snr`	`-17.25` dB Signal quality at gateway	float
`rx_time`	`1760973244` 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`	`1760973213.827367` 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 (1 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!0283d63d`
Signal Metrics:	RSSI: -128.0 dBm SNR: -17.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	78 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!abf83f20", "long_name": "Meshtastic 3F20", "short_name": "3F20", "macaddr": "JGKr+D8g", "hw_model": "TBEAM" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!0283d63d", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2885173024, "to": 3806484368, "id": 3056299580, "rx_time": 1760973244, "rx_snr": -17.25, "rx_rssi": -128, "hop_limit": 2, "hop_start": 3, "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": "0a09216162663833663230120f4d65736874617374696320334632301a043346323022062462abf83f20280442205d814419a32a5965b7211dcf0844e482292386599f11bf938f0fe68a3ac4cf33", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!abf83f20", "long_name": "Meshtastic 3F20", "short_name": "3F20", "macaddr": "JGKr+D8g", "hw_model": "TBEAM", "public_key": "XYFEGaMqWWW3IR3PCETkgikjhlmfEb+Tjw/mijrEzzM=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (78 bytes)

0a09216162663833663230120f4d65736874617374696320334632301a043346323022062462abf83f20280442205d814419a32a5965b7211dcf0844e482292386599f11bf938f0fe68a3ac4cf33

Hex Analysis:

Size:	78 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 #1021278 Success

Packet Information

Payload Data

Decoded Data: