Packet #2719066

Database ID:	2719066
Mesh Packet ID:	`0x8fa133fb` Used for correlation across gateways
Timestamp:	2025-08-16 19:00:18 UTC
From Node:	CBT1KE (CBT1)
To Node:	PA2RG-2 📟 (2.6.11) (📟)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	NL-3545-Knalliebar (KNB0)
Channel:	LongFast
RSSI:	-110 dBm
SNR:	2.5 dBm
Hop Info:	1/5 hops Start: 5, Limit: 4

Long Name:	CBT1KE
Short Name:	CBT1
Node ID:	!f8555e13
MAC Address:	8bf4VV4T
Hardware:	TRACKER_T1000_E

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:	71 bytes
Gateway:	!da5ed4d0
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	1 / 5

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`	`!da5ed4d0` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (71 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`4166344211` Source node ID	uint32
`to`	`2106829076` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`71` bytes	size
`hop_limit`	`4` Remaining hops allowed	uint32
`hop_start`	`5` Initial hop limit	uint32
`hops_taken`	`1` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-110.0` dBm Signal strength at gateway	int32
`rx_snr`	`2.50` dB Signal quality at gateway	float
`rx_time`	`1755363616` 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`	`1755363618.9086833` 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 (1 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!da5ed4d0`
Signal Metrics:	RSSI: -110.0 dBm SNR: 2.50 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	71 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!f8555e13", "long_name": "CBT1KE", "short_name": "CBT1", "macaddr": "8bf4VV4T", "hw_model": "TRACKER_T1000_E" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!da5ed4d0", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 4166344211, "to": 2106829076, "id": 2409706491, "rx_time": 1755363616, "rx_snr": 2.5, "rx_rssi": -110, "hop_limit": 4, "hop_start": 5, "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": "0a092166383535356531331206434254314b451a04434254312206f1b7f8555e1328474220025ac1d09c1cca981f93a96acd41ae7a587852bb09986fd271b735741627a0334800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!f8555e13", "long_name": "CBT1KE", "short_name": "CBT1", "macaddr": "8bf4VV4T", "hw_model": "TRACKER_T1000_E", "public_key": "AlrB0Jwcypgfk6lqzUGuelh4UrsJmG/Scbc1dBYnoDM=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (71 bytes)

0a092166383535356531331206434254314b451a04434254312206f1b7f8555e1328474220025ac1d09c1cca981f93a96acd41ae7a587852bb09986fd271b735741627a0334800

Hex Analysis:

Size:	71 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 #2719066 Success

Packet Information

Payload Data

Decoded Data: