Packet #358175

Database ID:	358175
Mesh Packet ID:	`0xc4d51984` Used for correlation across gateways
Timestamp:	2025-12-09 21:43:14 UTC
From Node:	Sashtastic 6f00 (S⁰)
To Node:	Meshtastic c41c (ne_o)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	GorPark (ead0)
Channel:	LongFast
RSSI:	-114 dBm
SNR:	-16.0 dBm
Hop Info:	4/7 hops Start: 7, Limit: 3

Long Name:	Sashtastic 6f00
Short Name:	S⁰
Node ID:	!9e756f00
MAC Address:	8J6edW8A
Hardware:	HELTEC_WIRELESS_TRACKER

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:	80 bytes
Gateway:	!9e77ead0
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	4 / 7

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`	`!9e77ead0` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (80 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2658496256` Source node ID	uint32
`to`	`3812344860` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`80` bytes	size
`hop_limit`	`3` Remaining hops allowed	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`4` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-114.0` dBm Signal strength at gateway	int32
`rx_snr`	`-16.00` dB Signal quality at gateway	float
`rx_time`	`1765302192` 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`	`36` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1765302194.2869465` 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:	`!9e77ead0`
Signal Metrics:	RSSI: -114.0 dBm SNR: -16.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	80 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!9e756f00", "long_name": "Sashtastic 6f00", "short_name": "S⁰", "macaddr": "8J6edW8A", "hw_model": "HELTEC_WIRELESS_TRACKER" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!9e77ead0", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2658496256, "to": 3812344860, "id": 3302300036, "rx_time": 1765302192, "rx_snr": -16.0, "rx_rssi": -114, "hop_limit": 3, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 36, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09213965373536663030120f5361736874617374696320366630301a0453e281b02206f09e9e756f002830422079ab032acb57bbd82287823326eb9f155f8ec1b2d952fbe147c0dda5aada64594800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!9e756f00", "long_name": "Sashtastic 6f00", "short_name": "S⁰", "macaddr": "8J6edW8A", "hw_model": "HELTEC_WIRELESS_TRACKER", "public_key": "easDKstXu9gih4IzJuufFV+OwbLZUvvhR8DdparaZFk=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (80 bytes)

0a09213965373536663030120f5361736874617374696320366630301a0453e281b02206f09e9e756f002830422079ab032acb57bbd82287823326eb9f155f8ec1b2d952fbe147c0dda5aada64594800

Hex Analysis:

Size:	80 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 #358175 Success

Packet Information

Payload Data

Decoded Data: