Packet #6903856

Database ID:	6903856
Mesh Packet ID:	`0x89da9a91` Used for correlation across gateways
Timestamp:	2025-08-15 17:46:36 UTC
From Node:	Sobradiel-3_EA2EYJ/Ant Vertical>Solar (Luis)
To Node:	e670 (e670)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	EA2COE (2COE)
Channel:	LongFast
RSSI:	-94 dBm
SNR:	-18.75 dBm
Hop Info:	1/3 hops Start: 3, Limit: 2

Long Name:	EA2EYJ > Sobradiel 🔊
Short Name:	Luis
Node ID:	!4cd5271a
MAC Address:	1UNM1Sca
Hardware:	T_ECHO

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:	89 bytes
Gateway:	!93df55c3
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	1 / 3

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`	`!93df55c3` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (89 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`1289037594` Source node ID	uint32
`to`	`3717850736` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`89` bytes	size
`hop_limit`	`2` Remaining hops allowed	uint32
`hop_start`	`3` Initial hop limit	uint32
`hops_taken`	`1` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-94.0` dBm Signal strength at gateway	int32
`rx_snr`	`-18.75` dB Signal quality at gateway	float
`rx_time`	`1755279999` 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`	`48` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1755279996.8744147` 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:	`!93df55c3`
Signal Metrics:	RSSI: -94.0 dBm SNR: -18.75 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	89 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!4cd5271a", "long_name": "EA2EYJ > Sobradiel 🔊", "short_name": "Luis", "macaddr": "1UNM1Sca", "hw_model": "T_ECHO" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!93df55c3", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1289037594, "to": 3717850736, "id": 2312805009, "rx_time": 1755279999, "rx_snr": -18.75, "rx_rssi": -94, "hop_limit": 2, "hop_start": 3, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 48, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09213463643532373161121845413245594a203e20536f6272616469656c2020f09f948a1a044c7569732206d5434cd5271a28074220982aa653464e2919a44d27c9e2d3b04618a46c0d4a4d479e0e1eea28640a631f4800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!4cd5271a", "long_name": "EA2EYJ > Sobradiel 🔊", "short_name": "Luis", "macaddr": "1UNM1Sca", "hw_model": "T_ECHO", "public_key": "mCqmU0ZOKRmkTSfJ4tOwRhikbA1KTUeeDh7qKGQKYx8=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (89 bytes)

0a09213463643532373161121845413245594a203e20536f6272616469656c2020f09f948a1a044c7569732206d5434cd5271a28074220982aa653464e2919a44d27c9e2d3b04618a46c0d4a4d479e0e1eea28640a631f4800

Hex Analysis:

Size:	89 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 #6903856 Success

Packet Information

Payload Data

Decoded Data: