Packet #1385689

Database ID:	1385689
Mesh Packet ID:	`0xc685d41e` Used for correlation across gateways
Timestamp:	2026-05-12 06:51:29 UTC
From Node:	Bengineering V4 (BenM)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	SPHTMF (🦑)
Channel:	MediumFast
RSSI:	-106 dBm
SNR:	-2.25 dBm
Hop Info:	7/7 hops Start: 7, Limit: 0
Relay Node:	`1e` 🐀 Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Long Name:	Bengineering V4
Short Name:	BenM
Node ID:	!f661a624
MAC Address:	RBv2YaYk
Hardware:	HELTEC_V4

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:	80 bytes
Gateway:	!02ed607c
Channel:	MediumFast
Payload Type:	NODEINFO_APP
Hop Count:	7 / 7

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: MediumFast
+ 1 more...

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
+ 2 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!02ed607c` Node ID format
`channel_id`	`MediumFast`
`packet`	`MeshPacket` (80 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`4133594660` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`80` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`7` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-106.0` dBm Signal strength at gateway	int32
`rx_snr`	`-2.25` dB Signal quality at gateway	float
`rx_time`	`1778568688` 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`	`30` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1778568689.3600416` 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)
✓ Custom channel: MediumFast
✓ Gateway node ID tracked

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (7 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!02ed607c`
Signal Metrics:	RSSI: -106.0 dBm SNR: -2.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	80 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!f661a624", "long_name": "Bengineering V4", "short_name": "BenM", "macaddr": "RBv2YaYk", "hw_model": "HELTEC_V4" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!02ed607c", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 4133594660, "to": 4294967295, "id": 3330659358, "rx_time": 1778568688, "rx_snr": -2.25, "rx_rssi": -106, "hop_limit": 0, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 30, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09216636363161363234120f42656e67696e656572696e672056341a0442656e4d2206441bf661a624286e42201efd012855adf58f7cb4deba2ce437ef2b26334625e7e2c75b47253b03331c684800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!f661a624", "long_name": "Bengineering V4", "short_name": "BenM", "macaddr": "RBv2YaYk", "hw_model": "HELTEC_V4", "public_key": "Hv0BKFWt9Y98tN66LOQ37ysmM0Yl5+LHW0clOwMzHGg=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (80 bytes)

0a09216636363161363234120f42656e67696e656572696e672056341a0442656e4d2206441bf661a624286e42201efd012855adf58f7cb4deba2ce437ef2b26334625e7e2c75b47253b03331c684800

Hex Analysis:

Size:	80 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 #1385689 Success

Packet Information

Payload Data

Decoded Data: