Packet #15813108

Database ID:	15813108
Mesh Packet ID:	`0xead6f54d` Used for correlation across gateways
Timestamp:	2026-04-16 13:12:16 UTC
From Node:	r2bca 7c58 (bca)
To Node:	Meshtastic 976c (976c)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Kedr GW4 1W (KEDR)
Channel:	LongFast
RSSI:	-105 dBm
SNR:	-6.0 dBm
Hop Info:	2/6 hops Start: 6, Limit: 4

Long Name:	r2bca 7c58
Short Name:	bca
Node ID:	!bba87c58
MAC Address:	LLy7qHxY
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:	74 bytes
Gateway:	!3351323c
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	2 / 6

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`	`!3351323c` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (74 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3148381272` Source node ID	uint32
`to`	`4187592556` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`74` bytes	size
`hop_limit`	`4` Remaining hops allowed	uint32
`hop_start`	`6` Initial hop limit	uint32
`hops_taken`	`2` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-105.0` dBm Signal strength at gateway	int32
`rx_snr`	`-6.00` dB Signal quality at gateway	float
`rx_time`	`1776334336` 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`	`12` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1776334336.3729298` 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 (2 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!3351323c`
Signal Metrics:	RSSI: -105.0 dBm SNR: -6.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	74 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!bba87c58", "long_name": "r2bca 7c58", "short_name": "bca", "macaddr": "LLy7qHxY", "hw_model": "TBEAM" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!3351323c", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3148381272, "to": 4187592556, "id": 3939956045, "rx_time": 1776334336, "rx_snr": -6.0, "rx_rssi": -105, "hop_limit": 4, "hop_start": 6, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 12, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09216262613837633538120a723262636120376335381a0362636122062cbcbba87c582804380c422012f8a7d968cf47a4ea9ed133aa0f80e0e68484aa10c80bd51f63bcddf3e36918", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!bba87c58", "long_name": "r2bca 7c58", "short_name": "bca", "macaddr": "LLy7qHxY", "hw_model": "TBEAM", "role": "CLIENT_BASE", "public_key": "Evin2WjPR6TqntEzqg+A4OaEhKoQyAvVH2O83fPjaRg=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (74 bytes)

0a09216262613837633538120a723262636120376335381a0362636122062cbcbba87c582804380c422012f8a7d968cf47a4ea9ed133aa0f80e0e68484aa10c80bd51f63bcddf3e36918

Hex Analysis:

Size:	74 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 #15813108 Success

Packet Information

Payload Data

Decoded Data: