Packet #617691

Database ID:	617691
Mesh Packet ID:	`0xebf11136` Used for correlation across gateways
Timestamp:	2026-01-08 19:52:44 UTC
From Node:	Meshtastic b0bc (b0bc)
To Node:	XXX station (XXXs)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	ub0jbx.ru — мост в TG (PBOT)
Channel:	LongFast
RSSI:	-118 dBm
SNR:	-4.25 dBm
Hop Info:	3/3 hops Start: 3, Limit: 0

Long Name:	Meshtastic b0bc
Short Name:	b0bc
Node ID:	!f98db0bc
MAC Address:	8CT5jbC8
Hardware:	TLORA_V2_1_1P6

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:	!da97389c
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	3 / 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`	`!da97389c` 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`	`4186812604` Source node ID	uint32
`to`	`1771864000` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`80` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`3` Initial hop limit	uint32
`hops_taken`	`3` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-118.0` dBm Signal strength at gateway	int32
`rx_snr`	`-4.25` dB Signal quality at gateway	float
`rx_time`	`1767901962` 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`	`188` Next hop node ID	uint32
`relay_node`	`116` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1767901964.0648336` 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 (3 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!da97389c`
Signal Metrics:	RSSI: -118.0 dBm SNR: -4.25 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": "!f98db0bc", "long_name": "Meshtastic b0bc", "short_name": "b0bc", "macaddr": "8CT5jbC8", "hw_model": "TLORA_V2_1_1P6" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!da97389c", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 4186812604, "to": 1771864000, "id": 3958444342, "rx_time": 1767901962, "rx_snr": -4.25, "rx_rssi": -118, "hop_limit": 0, "hop_start": 3, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 188, "relay_node": 116, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09216639386462306263120f4d65736874617374696320623062631a04623062632206f024f98db0bc280342209f70d7d1ef1290cadae47e1c40e33d7ad3e6798aeaaef7e47edeadf336c0e9564800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!f98db0bc", "long_name": "Meshtastic b0bc", "short_name": "b0bc", "macaddr": "8CT5jbC8", "hw_model": "TLORA_V2_1_1P6", "public_key": "n3DX0e8SkMra5H4cQOM9etPmeYrqrvfkft6t8zbA6VY=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (80 bytes)

0a09216639386462306263120f4d65736874617374696320623062631a04623062632206f024f98db0bc280342209f70d7d1ef1290cadae47e1c40e33d7ad3e6798aeaaef7e47edeadf336c0e9564800

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 #617691 Success

Packet Information

Payload Data

Decoded Data: