Packet #10433227

Database ID:	10433227
Mesh Packet ID:	`0x0891a018` Used for correlation across gateways
Timestamp:	2025-09-13 15:32:49 UTC
From Node:	German 77e8 (77e8)
To Node:	Oumaima 6b70 (6b70)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	German 774c (774c)
Channel:	LongFast
RSSI:	-49 dBm
SNR:	6.0 dBm
Hop Info:	0/4 hops Start: 4, Limit: 4

Long Name:	German 77e8
Short Name:	77e8
Node ID:	!9ee877e8
MAC Address:	nBOe6Hfo
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:	76 bytes
Gateway:	!9ee8774c
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	Unknown / 4

Privacy Summary

Exposure Level:
Direct Message

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 2 more...

Exposure Risks:
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
+ 1 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!9ee8774c` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (76 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2666035176` Source node ID	uint32
`to`	`2666031984` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`76` bytes	size
`hop_limit`	`4` Remaining hops allowed	uint32
`hop_start`	`4` Initial hop limit	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-49.0` dBm Signal strength at gateway	int32
`rx_snr`	`6.00` dB Signal quality at gateway	float
`rx_time`	`1757776169` 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`	`232` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1757777569.173429` 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
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!9ee8774c`
Zero Hop Policy:	Enabled Direct gateway connection
Signal Metrics:	RSSI: -49.0 dBm SNR: 6.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	76 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!9ee877e8", "long_name": "German 77e8", "short_name": "77e8", "macaddr": "nBOe6Hfo", "hw_model": "HELTEC_V3" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!9ee8774c", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2666035176, "to": 2666031984, "id": 143761432, "rx_time": 1757776169, "rx_snr": 6.0, "rx_rssi": -49, "hop_limit": 4, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 232, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09213965653837376538120b4765726d616e20373765381a043737653822069c139ee877e8282b4220757c4c01df92584c7eca64c1cdd184d97fc8bf8ab9014a76962ceb12a254ee724800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!9ee877e8", "long_name": "German 77e8", "short_name": "77e8", "macaddr": "nBOe6Hfo", "hw_model": "HELTEC_V3", "public_key": "dXxMAd+SWEx+ymTBzdGE2X/Iv4q5AUp2lizrEqJU7nI=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (76 bytes)

0a09213965653837376538120b4765726d616e20373765381a043737653822069c139ee877e8282b4220757c4c01df92584c7eca64c1cdd184d97fc8bf8ab9014a76962ceb12a254ee724800

Hex Analysis:

Size:	76 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 #10433227 Success

Packet Information

Payload Data

Decoded Data: