Packet #3069414

Database ID:	3069414
Mesh Packet ID:	`0xd76217f4` Used for correlation across gateways
Timestamp:	2025-07-07 17:03:18 UTC
From Node:	EA7-MA-016📡🌐☀️ (MA16)
To Node:	!9198d903 (d903)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	EA7KEL (7KEL)
Channel:	LongFast
RSSI:	-124 dBm
SNR:	-13.0 dBm
Hop Info:	4/5 hops Start: 5, Limit: 1

Long Name:	EA7-MA-016📡🌐☀️
Short Name:	MA16
Node ID:	!433e4694
MAC Address:	SMpDPkaU
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:	87 bytes
Gateway:	!433d56d0
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	4 / 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`	`!433d56d0` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (87 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`1128154772` Source node ID	uint32
`to`	`2442713347` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`87` bytes	size
`hop_limit`	`1` Remaining hops allowed	uint32
`hop_start`	`5` Initial hop limit	uint32
`hops_taken`	`4` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-124.0` dBm Signal strength at gateway	int32
`rx_snr`	`-13.00` dB Signal quality at gateway	float
`rx_time`	`1751907797` 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`	`188` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1751907798.6593957` 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 (4 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!433d56d0`
Signal Metrics:	RSSI: -124.0 dBm SNR: -13.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	87 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!433e4694", "long_name": "EA7-MA-016📡🌐☀️", "short_name": "MA16", "macaddr": "SMpDPkaU", "hw_model": "HELTEC_V3" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!433d56d0", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1128154772, "to": 2442713347, "id": 3613530100, "rx_time": 1751907797, "rx_snr": -13.0, "rx_rssi": -124, "hop_limit": 1, "hop_start": 5, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 188, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a0921343333653436393412184541372d4d412d303136f09f93a1f09f8c90e29880efb88f1a044d413136220648ca433e4694282b4220d1261e971a7e09b55d9b53eaa718cbfbd824534e1d77dea8bad95787fcbbae0b", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!433e4694", "long_name": "EA7-MA-016📡🌐☀️", "short_name": "MA16", "macaddr": "SMpDPkaU", "hw_model": "HELTEC_V3", "public_key": "0SYelxp+CbVdm1PqpxjL+9gkU04dd96outlXh/y7rgs=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (87 bytes)

0a0921343333653436393412184541372d4d412d303136f09f93a1f09f8c90e29880efb88f1a044d413136220648ca433e4694282b4220d1261e971a7e09b55d9b53eaa718cbfbd824534e1d77dea8bad95787fcbbae0b

Hex Analysis:

Size:	87 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 #3069414 Success

Packet Information

Payload Data

Decoded Data: