Packet #3189470

Database ID:	3189470
Mesh Packet ID:	`0x1c1beb01` Used for correlation across gateways
Timestamp:	2025-08-20 07:42:59 UTC
From Node:	Hellevoetsluis - Jilles.com (0181)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Meshtastic e2d0 (e2d0)
Channel:	LongFast
RSSI:	-121 dBm
SNR:	-8.5 dBm
Hop Info:	0/3 hops Start: 3, Limit: 3

Long Name:	Hellevoetsluis - Jilles.com
Short Name:	0181
Node ID:	!a2e1bcc4
MAC Address:	zI2i4bzE
Hardware:	STATION_G2

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:	90 bytes
Gateway:	!b03be2d0
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	Unknown / 3

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked
+ 1 more...

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
+ 2 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!b03be2d0` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (90 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2732702916` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`90` bytes	size
`hop_limit`	`3` Remaining hops allowed	uint32
`hop_start`	`3` Initial hop limit	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-121.0` dBm Signal strength at gateway	int32
`rx_snr`	`-8.50` dB Signal quality at gateway	float
`rx_time`	`1755668578` 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`	`1755668579.9413059` 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
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

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

MQTT-Specific Fields

Gateway ID:	`!b03be2d0`
Zero Hop Policy:	Enabled Direct gateway connection
Signal Metrics:	RSSI: -121.0 dBm SNR: -8.50 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	90 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!a2e1bcc4", "long_name": "Hellevoetsluis - Jilles.com", "short_name": "0181", "macaddr": "zI2i4bzE", "hw_model": "STATION_G2" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!b03be2d0", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2732702916, "to": 4294967295, "id": 471591681, "rx_time": 1755668578, "rx_snr": -8.5, "rx_rssi": -121, "hop_limit": 3, "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": "0a09216132653162636334121b48656c6c65766f6574736c756973202d204a696c6c65732e636f6d1a04303138312206cc8da2e1bcc4281f4220142178a663b17ad64ea010379cabb739ad3de083f6065a30a7ffbf98657b897d", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!a2e1bcc4", "long_name": "Hellevoetsluis - Jilles.com", "short_name": "0181", "macaddr": "zI2i4bzE", "hw_model": "STATION_G2", "public_key": "FCF4pmOxetZOoBA3nKu3Oa094IP2Blowp/+/mGV7iX0=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (90 bytes)

0a09216132653162636334121b48656c6c65766f6574736c756973202d204a696c6c65732e636f6d1a04303138312206cc8da2e1bcc4281f4220142178a663b17ad64ea010379cabb739ad3de083f6065a30a7ffbf98657b897d

Hex Analysis:

Size:	90 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 #3189470 Success

Packet Information

Payload Data

Decoded Data: