Packet #3912445

Database ID:	3912445
Mesh Packet ID:	`0xa960c80f` Used for correlation across gateways
Timestamp:	2025-07-16 20:48:09 UTC
From Node:	Meshtastic b05e (b05e)
To Node:	EA3INU🚗 (J1)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Angel (🏠)
Channel:	LongFast
RSSI:	-126 dBm
SNR:	-15.0 dBm
Hop Info:	2/6 hops Start: 6, Limit: 4

Long Name:	Meshtastic b05e
Short Name:	b05e
Node ID:	!be6cb05e
MAC Address:	2M2+bLBe
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:	80 bytes
Gateway:	!db2fa5d4
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`	`!db2fa5d4` 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`	`3194794078` Source node ID	uint32
`to`	`2956780196` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`80` 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`	`-126.0` dBm Signal strength at gateway	int32
`rx_snr`	`-15.00` dB Signal quality at gateway	float
`rx_time`	`1752698888` 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`	`1752698889.1932027` 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:	`!db2fa5d4`
Signal Metrics:	RSSI: -126.0 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": "!be6cb05e", "long_name": "Meshtastic b05e", "short_name": "b05e", "macaddr": "2M2+bLBe", "hw_model": "TRACKER_T1000_E" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!db2fa5d4", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3194794078, "to": 2956780196, "id": 2841692175, "rx_time": 1752698888, "rx_snr": -15.0, "rx_rssi": -126, "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": 0, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09216265366362303565120f4d65736874617374696320623035651a04623035652206d8cdbe6cb05e284738054220ff038c55e56f2391859017b04657636eac11e7049fcd5b65f47e789b4d724b2a", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!be6cb05e", "long_name": "Meshtastic b05e", "short_name": "b05e", "macaddr": "2M2+bLBe", "hw_model": "TRACKER_T1000_E", "role": "TRACKER", "public_key": "/wOMVeVvI5GFkBewRldjbqwR5wSfzVtl9H54m01ySyo=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (80 bytes)

0a09216265366362303565120f4d65736874617374696320623035651a04623035652206d8cdbe6cb05e284738054220ff038c55e56f2391859017b04657636eac11e7049fcd5b65f47e789b4d724b2a

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 #3912445 Success

Packet Information

Payload Data

Decoded Data: