Packet #5987401

Database ID:	5987401
Mesh Packet ID:	`0x7843d857` Used for correlation across gateways
Timestamp:	2026-01-15 02:58:39 UTC
From Node:	Meshtastic 7bc4 (7bc4)
To Node:	BPol30 5a27 (5a27)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Tsaritsyno_KB_U_868 (KBU8)
Channel:	LongFast
RSSI:	-123 dBm
SNR:	-15.0 dBm
Hop Info:	4/7 hops Start: 7, Limit: 3

Long Name:	Meshtastic 7bc4
Short Name:	7bc4
Node ID:	!9e787bc4
MAC Address:	8J6eeHvE
Hardware:	HELTEC_V3

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:	!db2964b0
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	4 / 7

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`	`!db2964b0` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (80 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2658696132` Source node ID	uint32
`to`	`2368035367` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`80` bytes	size
`hop_limit`	`3` Remaining hops allowed	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`4` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-123.0` dBm Signal strength at gateway	int32
`rx_snr`	`-15.00` dB Signal quality at gateway	float
`rx_time`	`1768435118` 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`	`188` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1768435119.722571` 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 (4 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!db2964b0`
Signal Metrics:	RSSI: -123.0 dBm SNR: -15.00 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": "!9e787bc4", "long_name": "Meshtastic 7bc4", "short_name": "7bc4", "macaddr": "8J6eeHvE", "hw_model": "HELTEC_V3" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!db2964b0", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2658696132, "to": 2368035367, "id": 2017712215, "rx_time": 1768435118, "rx_snr": -15.0, "rx_rssi": -123, "hop_limit": 3, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 188, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09213965373837626334120f4d65736874617374696320376263341a04376263342206f09e9e787bc4282b4220faf9bcc21e683e23266dbad3c725c4f3f530f63092c083279c4202b07a2fca5e4800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!9e787bc4", "long_name": "Meshtastic 7bc4", "short_name": "7bc4", "macaddr": "8J6eeHvE", "hw_model": "HELTEC_V3", "public_key": "+vm8wh5oPiMmbbrTxyXE8/Uw9jCSwIMnnEICsHovyl4=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (80 bytes)

0a09213965373837626334120f4d65736874617374696320376263341a04376263342206f09e9e787bc4282b4220faf9bcc21e683e23266dbad3c725c4f3f530f63092c083279c4202b07a2fca5e4800

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 #5987401 Success

Packet Information

Payload Data

Decoded Data: