Packet #3621321

Database ID:	3621321
Mesh Packet ID:	`0xaf6e6094` Used for correlation across gateways
Timestamp:	2025-07-13 13:16:43 UTC
From Node:	T-ECHOSD 🛵📡 (T3SD)
To Node:	EspiRadio (ESPR)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	CROQUETASTIC-CL-868 (CRQT)
Channel:	LongFast
RSSI:	-28 dBm
SNR:	11.25 dBm
Hop Info:	3/5 hops Start: 5, Limit: 2

Long Name:	T-ECHOSD 🛵📡
Short Name:	T3SD
Node ID:	!1a059d36
MAC Address:	zTUaBZ02
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:	82 bytes
Gateway:	!ea246298
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	3 / 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`	`!ea246298` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (82 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`436575542` Source node ID	uint32
`to`	`1092370704` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`82` bytes	size
`hop_limit`	`2` Remaining hops allowed	uint32
`hop_start`	`5` Initial hop limit	uint32
`hops_taken`	`3` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-28.0` dBm Signal strength at gateway	int32
`rx_snr`	`11.25` dB Signal quality at gateway	float
`rx_time`	`1752412602` 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`	`32` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1752412603.3813202` 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 (3 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!ea246298`
Signal Metrics:	RSSI: -28.0 dBm SNR: 11.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	82 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!1a059d36", "long_name": "T-ECHOSD 🛵📡", "short_name": "T3SD", "macaddr": "zTUaBZ02", "hw_model": "T_ECHO" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!ea246298", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 436575542, "to": 1092370704, "id": 2943246484, "rx_time": 1752412602, "rx_snr": 11.25, "rx_rssi": -28, "hop_limit": 2, "hop_start": 5, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 32, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a092131613035396433361211542d4543484f534420f09f9bb5f09f93a11a04543353442206cd351a059d3628074220a62deaff3ec9f8e3062775ad9785e4fa7cc8d6b066ddbeeed15445c923012f524800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!1a059d36", "long_name": "T-ECHOSD 🛵📡", "short_name": "T3SD", "macaddr": "zTUaBZ02", "hw_model": "T_ECHO", "public_key": "pi3q/z7J+OMGJ3Wtl4Xk+nzI1rBm3b7u0VRFySMBL1I=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (82 bytes)

0a092131613035396433361211542d4543484f534420f09f9bb5f09f93a11a04543353442206cd351a059d3628074220a62deaff3ec9f8e3062775ad9785e4fa7cc8d6b066ddbeeed15445c923012f524800

Hex Analysis:

Size:	82 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 #3621321 Success

Packet Information

Payload Data

Decoded Data: