Packet #18273931

Database ID:	18273931
Mesh Packet ID:	`0xadb35867` Used for correlation across gateways
Timestamp:	2026-06-07 22:26:16 UTC
From Node:	Detroit city (DTRC)
To Node:	rxtx (341c)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Aster-02 (AST2)
Channel:	MediumFast
RSSI:	-40 dBm
SNR:	12.0 dBm
Hop Info:	7/7 hops Start: 7, Limit: 0

Long Name:	Detroit city
Short Name:	DTRC
Node ID:	!9ea0bf08
MAC Address:	nBOeoL8I
Hardware:	HELTEC_WIRELESS_PAPER

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:	77 bytes
Gateway:	!b2a78a88
Channel:	MediumFast
Payload Type:	NODEINFO_APP
Hop Count:	7 / 7

Privacy Summary

Exposure Level:
Direct Message

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

Exposure Risks:
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (7 hops)
+ 1 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!b2a78a88` Node ID format
`channel_id`	`MediumFast`
`packet`	`MeshPacket` (77 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2661334792` Source node ID	uint32
`to`	`3148428316` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`77` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`7` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-40.0` dBm Signal strength at gateway	int32
`rx_snr`	`12.00` dB Signal quality at gateway	float
`rx_time`	`1780860374` 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`	`244` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1780860376.8273213` 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
✓ Custom channel: MediumFast
✓ Gateway node ID tracked

Exposure Risks:

⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (7 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!b2a78a88`
Signal Metrics:	RSSI: -40.0 dBm SNR: 12.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	77 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!9ea0bf08", "long_name": "Detroit city", "short_name": "DTRC", "macaddr": "nBOeoL8I", "hw_model": "HELTEC_WIRELESS_PAPER" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!b2a78a88", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2661334792, "to": 3148428316, "id": 2914211943, "rx_time": 1780860374, "rx_snr": 12.0, "rx_rssi": -40, "hop_limit": 0, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 244, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09213965613062663038120c446574726f697420636974791a044454524322069c139ea0bf0828314220853b37d45a239f577711306db00bd710d1af32c1b95150046b0c98b9029b44564800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!9ea0bf08", "long_name": "Detroit city", "short_name": "DTRC", "macaddr": "nBOeoL8I", "hw_model": "HELTEC_WIRELESS_PAPER", "public_key": "hTs31Fojn1d3ETBtsAvXENGvMsG5UVAEawyYuQKbRFY=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (77 bytes)

0a09213965613062663038120c446574726f697420636974791a044454524322069c139ea0bf0828314220853b37d45a239f577711306db00bd710d1af32c1b95150046b0c98b9029b44564800

Hex Analysis:

Size:	77 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 #18273931 Success

Packet Information

Payload Data

Decoded Data: