Packet #3950694

Database ID:	3950694
Mesh Packet ID:	`0x59fdcadb` Used for correlation across gateways
Timestamp:	2025-07-17 07:47:01 UTC
From Node:	SanTasticT114 (SnTs)
To Node:	Karman’s Tube Solar 1️⃣🗼 (KTS1)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Santastic 3234 (S3)
Channel:	LongFast
RSSI:	-50 dBm
SNR:	6.0 dBm
Hop Info:	0/5 hops Start: 5, Limit: 5

Long Name:	SanTasticT114
Short Name:	SnTs
Node ID:	!43f1bce1
MAC Address:	5YtD8bzh
Hardware:	HELTEC_MESH_NODE_T114

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:	78 bytes
Gateway:	!849c3234
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	Unknown / 5

Privacy Summary

Exposure Level:
Direct Message

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

Exposure Risks:
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
+ 1 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!849c3234` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (78 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`1139916001` Source node ID	uint32
`to`	`211245879` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`78` bytes	size
`hop_limit`	`5` Remaining hops allowed	uint32
`hop_start`	`5` Initial hop limit	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-50.0` dBm Signal strength at gateway	int32
`rx_snr`	`6.00` dB Signal quality at gateway	float
`rx_time`	`1752738418` 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`	`225` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1752738421.1121247` 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
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!849c3234`
Zero Hop Policy:	Enabled Direct gateway connection
Signal Metrics:	RSSI: -50.0 dBm SNR: 6.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	78 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!43f1bce1", "long_name": "SanTasticT114", "short_name": "SnTs", "macaddr": "5YtD8bzh", "hw_model": "HELTEC_MESH_NODE_T114" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!849c3234", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1139916001, "to": 211245879, "id": 1509804763, "rx_time": 1752738418, "rx_snr": 6.0, "rx_rssi": -50, "hop_limit": 5, "hop_start": 5, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 225, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09213433663162636531120d53616e546173746963543131341a04536e54732206e58b43f1bce1284538014220f4454ad6f51bc476a7af5a141ef4059954ae1d7f172a38d8550bc75f0dfa603b", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!43f1bce1", "long_name": "SanTasticT114", "short_name": "SnTs", "macaddr": "5YtD8bzh", "hw_model": "HELTEC_MESH_NODE_T114", "role": "CLIENT_MUTE", "public_key": "9EVK1vUbxHanr1oUHvQFmVSuHX8XKjjYVQvHXw36YDs=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (78 bytes)

0a09213433663162636531120d53616e546173746963543131341a04536e54732206e58b43f1bce1284538014220f4454ad6f51bc476a7af5a141ef4059954ae1d7f172a38d8550bc75f0dfa603b

Hex Analysis:

Size:	78 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 #3950694 Success

Packet Information

Payload Data

Decoded Data: